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Satono Diamond
Satono Diamond winning the Kikuka Sho in October 2016
SireDeep Impact
GrandsireSunday Silence
DamMalpensa
DamsireOrpen
SexStallion
Foaled30 January 2013[1]
CountryJapan
ColourBay
BreederNorthern Farm
OwnerHajime Satomi
TrainerYasutoshi Ikee
Record18: 8-1-3
Earnings865,124,000 yen
Major wins
Kisaragi Sho (2016)
Kobe Shimbun Hai (2016)
Kikuka Sho (2016)
Arima Kinen (2016)
Hanshin Daishoten (2017)
Kyoto Daishoten (2018)
Awards
JRA Award for Best Three-Year-Old Colt (2016)

Satono Diamond (Japanese: サトノダイヤモンド, foaled 30 January 2013) is a Japanese Thoroughbred racehorse. He showed promise as a juvenile in 2015 when he won both of his races. In the following year he developed into a top-class performer winning the Kisaragi Sho, finishing third in the Satsuki Sho, and taking second place in the Tokyo Yushun. In the autumn he was unbeaten in three starts, winning the Kobe Shimbun Hai, Kikuka Sho, Arima Kinen, and took the JRA Award for Best Three-Year-Old Colt.

Background

[edit]

Satono Diamond is a bay horse with a diamond-shaped white star bred in Japan by Northern Farm. In 2013 he was consigned as a foal to the JRHA Select sale and was bought for ¥241,500,000 ($2,272,400)[1] by Hajime Satomi. Satomi, whose horses usually carry the "Satono" prefix, sent the colt into training with Yasutoshi Ikee. In all of his races in to the end of 2016 Satono Diamond was ridden by the French jockey Christophe Lemaire.

He is from the sixth crop of foals sired by Deep Impact, who was the Japanese Horse of the Year in 2005 and 2006, winning races including the Tokyo Yushun, Tenno Sho, Arima Kinen and Japan Cup. Deep Impact's other progeny include Gentildonna, Harp Star, Kizuna, A Shin Hikari and Makahiki.[2] Satono Diamond is the first foal produced by Malpensa, a mare who won three Grade I races in her native Argentina.[3] She was descended from Royal Arch, an Irish mare who was exported to Argentina in the early 1930s.[4]

Racing career

[edit]

2015: Two-year-old season

[edit]

Satono Diamond made his debut in a 2000 meter race for previously unraced juveniles at Kyoto Racecourse on November 8th, and won by two lengths from Leukerbad. Racing over the same distance at Hanshin Racecourse on December 26th, the colt followed up in a minor event winning by three lengths from Queen's Best.

2016: Three-year-old season

[edit]
Satono Diamond at Kyoto in February 2016

The colt began his 2016 campaign in the Grade 3 Kisaragi Sho (a 1800 meter trial race for the Satsuki Sho) on February 7th at Kyoto. He started as the 1/5 favourite against eight opponents, and won by three and a half lengths plus a head from Les Planches and Leukerbad.[5] In the Satsuki Sho (a race of over 2000 metres at Nakayama Racecourse) on April 17th, Satono Diamond was made the 1.7/1 favourite ahead of the Japanese champion two-year-old colt Leontes in an eighteen-runner field. Before the race, Ikee commented on the colt's physical progress and added, "He's very stable mentally and he can handle any kind of race."[6] After racing in the midfield, Diamond made a forward move in the straight, but was slightly hampered in the closing stages and finished third behind Dee Majesty and Makahiki. Ikee later said that the tactics employed had been "a mistake", commenting, "This colt is big and has long limbs and he's not able to take small steps."[7] On the 83rd running of the Tokyo Yushun, in front of a crowd of 140,000 at Tokyo Racecourse, Satono Diamond was one of eighteen colts in contention, and started second favourite behind Dee Majesty. In the race, he was positioned several lengths behind the early leaders before moving up to dispute the lead in the straight. But in a very close finish, he was beaten by a nose by Makahiki, with Dee Majesty half a length away in third place.[8]

Satono Diamond's trainer Yasutoshi Ikee

After a break of almost four months, Satono Diamond returned to the track in the Kobe Shimbun Hai (a major trial race of 2400 meters for the Kikuka Sho), at Hanshin on September 25th. He was the 1/5 favourite in a fifteen-runner field, and won by a neck from the 26/1 outsider Mikki Rocket.[9] Ikee commented, "That was his first outing in a while and he was a bit keen and also didn't show his best in the finish either. Still, he won, so that's the important thing."[10] At the 77th running of the Kikuka Sho, Satono Diamond started as the 1.3/1 favourite in an eighteen-runner field which included Dee Majesty, Mikki Rocket and Air Spinel. After racing in the midfield, he moved up on the outside when entering the straight, took the lead 200 metres from the finish, and quickened to win the race by two and a half lengths from the outsider Rainbow Line.[11] After the race Lemaire said, "I'm excited and happy to be able to win a classic race for the first time in Japan. The colt was in his best condition and the only concern was the distance. But he responded really well in the last stretch so I was quite confident that we will win. He's a top-class horse and will definitely be able to win other G1 races."[12]

On December 25th, Satono Diamond was matched against older opposition when he was one of sixteen horses invited to contest the Arima Kinen (a 2500 meter race) at Nakayama. He was made the 2.6/1 favourite ahead of the four-year-old Kitasan Black and the 2015 winner Gold Actor. The other runners included Sounds of Earth (who placed second in 2015), Cheval Grand (Hanshin Daishoten, Copa Republica Argentina), Marialite (Queen Elizabeth II Cup, Takarazuka Kinen) and Mikki Queen (Yushun Himba, Shuka Sho). Satono Diamond raced in the midfield on the outside, as the Maltese Apogee set the pace from Kitasan Black. He moved up when entering the straight before producing a late burst of acceleration to overtake Kitasan Black well inside the last 100 meters, winning by a neck with Gold Actor half a length away in third place.[13] Lemaire said, "He is such an easy ride. He makes my job so easy. He was a little slow to react on the last turn. But he was so strong in front of goal. He has such a big heart." Whilst Ikee commented, "It's a huge relief. He’ll be able to take it up a notch or two next season. He should really come into his own by the fall. He just beat the best horses in all of Japan as a 3-year-old, which is great and gives us something to look forward to next year."[14]

2017: Four-year-old season

[edit]

Satono Diamond began his 2017 campaign in the Grade 2 Hanshin Daishoten (over 3000 meters) on March 19th. He started at long odds-on with the only of his nine opponents to start at less than 28/1, these being Cheval Grand and the 2014 Tokyo Yushun winner One And Only. He won by one and a half lengths from Cheval Grand with the outsider Tosen Basil taking third place.[15] On April 30th, the colt faced a rematch with Kitasan Black in the spring edition of the Tenno Sho (over 3200 meters) at Kyoto, and started 1.5/1 second favourite behind his older rival. He finished third of the seventeen runners, beaten by one and a quarter lengths plus a neck by Kitasan Black and Cheval Grand.

In August, Satono Diamond was sent to France to be prepared for a challenge for the Prix de l'Arc de Triomphe. On his European debut he started second favourite for the September 10th Prix Foy (over 2400 meters) on soft ground at Chantilly Racecourse. After briefly taking the lead 300 meters out, he faded to finish fifth behind the German challenger Dschingis Secret. In the Prix de l'Arc de Triomphe three weeks later, he made no impact and came home fifteenth of the eighteen runners behind Enable.[16]

2018: Five-year-old season

[edit]

On his first run as a five-year-old, Satono Diamond finished third to Suave Richard in the Kinko Sho at Chukyo Racecourse on March 11th. Three weeks later, he started third favorite in the betting for the Grade 1 Osaka Hai at Hanshin. However, he was "never a threat" and came home seventh behind Suave Richard, six and a quarter lengths behind the winner.[17] On June 24th at the same track, he was made favourite for the Grade 1 Takarazuka Kinen (over 2200 meters). He fought for the lead with the eventual winner Mikki Rocket early in the straight, but then faded in the closing stages to finish sixth.

After the summer break Satono Diamond returned on October 8th when he was the 1.3/1 second favorite behind Cheval Grand in the Grade 2 Kyoto Daishoten (over 2400 meters). Ridden by Yuga Kawada, he settled in the midfield before overtaking the front-running Win Tenderness early in the straight, and held off the late run by the filly Red Genova to win by half a length.[18] Diamond returned to the highest class for his next race, and finished sixth behind Almond Eye in the Japan Cup at Tokyo on November 24th. Satono Diamond ended his season on December 23rd, with an attempt to repeat his 2016 success at the Arima Kinen, but came home sixth of the sixteen runners behind Blast Onepiece.

Stud Career

[edit]

Satono Diamond was retired from racing at the end of the 2018 season and began his career as a breeding stallion at the Shadai Stallion Station.[19] His most successful crop is Satono Glanz [ja], who won the Kyoto Shimbun Hai and Kobe Shimbun Hai in 2023, setting a course record for the latter.[20][21]

Notable progeny

[edit]

c = colt, f = filly, g = gelding

Foaled Name Sex Major Wins
2020 Satono Glanz c Kyoto Shimbun Hai, Kobe Shimbun Hai
2020 Shinryokuka f Niigata Kinen
2021 Allnatt c Challenge Cup

Assessment and awards

[edit]

In the 2016 JRA Awards, Satono Diamond was named Best Three-Year-Old Colt as he took 286 of the 291 votes. In the poll to determine the Japanese Horse of the Year, he finished third in the voting behind Kitasan Black and Maurice.[22] In the 2016 edition of the World's Best Racehorse Rankings he was given a rating of 123, making him the 12th best racehorse in the world, and the third-best three-year-old colt behind Arrogate and Almanzor.[23]

[edit]

An anthropomorphized version of Satono Diamond appears as a character in Umamusume: Pretty Derby, voiced by Hina Tachibana.[24]

Pedigree

[edit]
Pedigree of Satono Diamond (JPN), bay colt 2013[1]
Sire
Deep Impact (JPN)
2002 		Sunday Silence (USA)
1986 		Halo Hail to Reason
Cosmah
Wishing Well Understanding
Mountain Flower
Wind in Her Hair (IRE)
1991 		Alzao Lyphard
Lady Rebecca
Burghclere Busted
Highclere
Dam
Malpensa (ARG)
2006 		Orpen (USA)
1996 		Lure Danzig
Endear
Bonita Francita Devil's Bag
Raise the Standard
Marsella (ARG)
1997 		Southern Halo Halo
Northern Sea
Riviere Logical
Talonado (Family: 1-w)[4]

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Satono Diamond

View on Grokipedia
from Grokipedia
Satono Diamond (foaled 30 2013) is a retired Japanese racehorse best known for his victories in two prestigious Grade 1 races during his three-year-old season in 2016: the Kikuka-shō (Japanese St. Leger) and the Arima Kinen (Grand Prix). He was voted the Japanese champion three-year-old colt of 2016. Bred in by Northern Farm and purchased as a yearling for 241,500,000 JPY at the 2013 Select Sale, Satono Diamond is a colt sired by the influential Deep Impact out of the Orpen mare Malpensa. Owned by businessman , part of his prominent "Satono" string of high-profile horses, he was trained throughout his career by Yasutoshi Ikee. Satono Diamond began his racing career with promise as a juvenile in late 2015, securing victories in both of his starts, but he truly emerged as a top middle-distance contender the following year. His breakthrough came in February 2016 with a win in the Kisaragi Shō (G3), followed by the in September, setting the stage for his classic triumphs. In October, he captured the Kikuka-shō at , defeating strong rivals over 3,000 meters to claim his first Grade 1 title. Just two months later, on December 25, 2016, the three-year-old Satono Diamond upset the older horses in the Arima Kinen at Nakayama Racecourse, edging out the favored by a nose in a thrilling finish before a crowd of 98,626 spectators, marking his second consecutive G1 victory and solidifying his status as one of Japan's elite stayers. Over his career from 2015 to 2018, Satono Diamond competed in 18 races, achieving 8 wins, 1 second, and 3 thirds, with total earnings of 865,120,000 JPY. He added stakes wins including the 2017 Hanshin Daishōten (G2) but faced setbacks in international competition, finishing unplaced in the 2017 . Retired at the end of his five-year-old campaign in 2018, Satono Diamond transitioned to stud duty, where he has made an impact as a , producing graded stakes winners such as Satono Glanz and Shinryokuka as of 2025.

Background

Breeding and Foaling

Satono Diamond, a colt, was foaled on January 30, 2013, at Northern Farm in , . The , Northern Farm, consigned him as a to the 2013 JRHA Select Sale, where he was purchased by owner for ¥241,500,000 (approximately US$2.4 million). This high price reflected early promise in his physical conformation and pedigree, marking him as a standout prospect from the outset. Satono Diamond's sire was Deep Impact, a leading Japanese stallion renowned for imparting both speed and stamina to his progeny, qualities honed from his own undefeated racing career that included winning the Japanese Triple Crown in 2005. Deep Impact's victories in races ranging from 2000 to 3000 meters underscored his middle-distance prowess, a trait breeders sought to pass on for versatile performers on turf. His dam, Malpensa, was an Argentine-bred mare by Orpen who achieved success as a multiple winner in her native country, capturing three top-level races that highlighted her speed and class. Imported to Japan by Northern Farm for breeding purposes, Malpensa brought a robust South American lineage known for producing durable runners capable of withstanding rigorous campaigns. The pairing of Deep Impact and Malpensa was strategically designed to combine elite Japanese stamina with Argentine toughness, aiming to produce a colt suited for high-level middle-distance racing while exhibiting resilience over extended seasons. This genetic foundation positioned Satono Diamond as a prime candidate for classic distances, emphasizing balanced athleticism over specialized sprinting or staying extremes.

Ownership and Training

Satono Diamond was owned by , the chairman and CEO of Inc., a prominent Japanese businessman known for his extensive investments. Satomi's horses typically carry the "Satono" prefix, reflecting a seen in other stablemates like and Satono Aladdin. Acquired as a for 241,500,000 yen at the 2013 JRHA Select Sale, the colt represented a significant investment in Deep Impact's lineage. Following his purchase, Satono Diamond underwent breaking and pre-training at Northern Farm's facilities in , a standard practice for many high-value Japanese-bred yearlings to build foundational fitness and assess potential. Initial trials at the farm highlighted his promising stamina, with handlers noting his strong finishing ability over longer distances during early workouts, setting expectations for a debut in longer juvenile races. No major health issues were reported during this preparatory phase, allowing a smooth transition to professional training. The colt entered the care of trainer Yasutoshi Ikee at the JRA's Ritto Training Center in , where Ikee, son of legendary trainer Yasuo Ikee, managed a stable of elite runners. Ikee's approach focused on methodical development, particularly for Deep Impact progeny, prioritizing steady conditioning to enhance endurance without overexertion, as evidenced in his handling of similar colts like . Primary jockey associations included , who partnered Satono Diamond in key early workouts and his debut preparation, and Mirco Demuro, who contributed to trial sessions evaluating his responsiveness. Within Ikee's string, Satono Diamond joined a roster of high-profile , including triple crown winner , Japan Cup victor Dream Journey, and Tenno Sho winner , benefiting from the stable's experienced support staff and resources tailored for top-level contenders. This environment facilitated his progression toward a late two-year-old debut in November 2015, building anticipation for his entry into competitive racing.

Racing Career

2015: Two-Year-Old Season

Satono Diamond made a promising start to his racing career in 2015, securing victories in both of his juvenile outings over middle distances, which highlighted his early aptitude for stamina-testing efforts. On November 8, 2015, the colt debuted in a 2000-meter turf maiden race for two-year-olds at Racecourse on soft ground, where French jockey Christophe Lemaire guided him from gate six in a field of ten. Satono Diamond settled midfield before producing a strong finishing kick to win by 0.4 seconds (approximately two lengths) in a time of 2:03.8, earning ¥7,000,000. This performance demonstrated his inherited stamina from sire Deep Impact, as he closed powerfully despite the yielding conditions. His second start followed on December 26, 2015, at Racecourse in another 2000-meter turf allowance race restricted to two-year-olds, again under Lemaire's ride from post eleven in a larger field of fifteen on good ground. Satono Diamond raced toward the rear early on before unleashing a decisive late surge to triumph by 0.6 seconds (approximately three lengths) over Queen's Best in 2:03.8, adding ¥7,200,000 to his tally. Lemaire noted the colt's impressive acceleration in the stretch, while trainer Yasutoshi Ikee commented on his calm demeanor and potential suitability for classic distances, crediting meticulous preparation at the stable. Finishing his two-year-old campaign unbeaten with two wins from two starts and total earnings of ¥14,200,000, Satono Diamond established himself as a prospect for longer trips, his tactical closing style underscoring the depth of stamina passed from Deep Impact.

2016: Three-Year-Old Season

Satono Diamond opened his three-year-old campaign on February 7 at Racecourse, where he secured a win in the Grade 3 Kisaragi Sho over 1800 meters, prevailing by three-quarters of a length under jockey Christophe Lemaire in a time of 1:46.9. This performance built on the promise shown in his undefeated juvenile season, positioning him as a contender for the . Two months later, on April 17 at Nakayama, he finished third in the Grade 1 Satsuki Sho over 2000 meters, beaten by 1¼ lengths in 1:58.3 after a wide trip, with Dee Majesty and ahead. In the second leg of the Japanese Triple Crown, the Grade 1 Tokyo Yushun (Japanese Derby) on May 29 at Tokyo over 2400 meters, Satono Diamond rallied strongly to finish a nose second to in a thrilling , clocking 2:24.0 despite a troubled run. After a summer break, he returned in September with a dominant victory in the Grade 2 Kobe Shimbun Hai on the 25th at over 2400 meters, winning by a neck in 2:25.7 against a strong field including Mikki Rocket, earning ¥55,078,000. This prep set the stage for the final Triple Crown leg. On October 23 at , Satono Diamond claimed the Grade 1 Kikuka Sho (Japanese St. Leger) over 3000 meters, the longest of the classics, by 2½ lengths in 3:03.3 under Lemaire, fending off Rainbow Line to complete his Triple Crown bid after earlier placings. The win highlighted his stamina, a key trait inherited from his Deep Impact lineage, and intensified his rivalry with contemporaries like . He capped the year on December 25 at Nakayama in the Grade 1 Arima Kinen over 2500 meters, edging by a in a dramatic timed at 2:32.6, becoming the first three-year-old to win since 2003. Satono Diamond's 2016 season comprised six starts with four wins, one second, and one third, amassing ¥660,764,000 in earnings and establishing him as a leading stayer. His tactical versatility under Lemaire, often settling midfield before unleashing a powerful finish, defined key battles against in the classics and in the Kinen, marking a breakthrough year in Japanese racing.

2017: Four-Year-Old Season

Satono Diamond opened his four-year-old campaign with a dominant victory in the Grade 2 Daishoten on March 19 at Racecourse, covering 3000 meters of turf. Ridden by Christophe Lemaire for trainer Yasutoshi Ikee, the colt started as the heavy favorite and pulled clear to win by 1½ lengths over Cheval Grand, showcasing his stamina in preparation for longer-distance targets. On April 30 at Racecourse, he finished unplaced (15th of 17) in the Grade 1 Tenno Sho (Spring) over 3200 meters, beaten by 2½ lengths in 3:12.7 after a wide trip on firm ground under Lemaire. Following the spring campaign, Satono Diamond was shipped to in to challenge for the prestigious . His preparatory run came in the Grade 2 Prix Foy on September 10 at Chantilly Racecourse over 2400 meters on soft ground, where he finished fourth under Lemaire, beaten by three lengths after a troubled trip that included traffic issues in the straight. Three weeks later, on October 1, he tackled the Grade 1 at Chantilly over the same distance, starting at 40/1 odds but fading to finish 15th of 18 runners on the softening ground, with Lemaire noting the colt's good condition but lack of adaptation to European conditions and travel fatigue. Returning to Japan, Satono Diamond lined up for the Grade 1 Tenno Sho (Autumn) on October 29 at over 2000 meters, where he rallied strongly to claim third place behind and , earning a share of the ¥325 million prize pool despite the rigors of his recent overseas excursion. This performance highlighted his resilience against top domestic rivals, including a rematch with from their close 2016 Kinen duel. In total, Satono Diamond made five starts during the 2017 season, recording one win and one third-place finish while earning ¥106,222,000. The European campaign, while ambitious as Japan's leading stayer, appeared to impact his overall form, with the soft ground and long journey contributing to his underwhelming Arc result before a partial recovery back home.

2018: Five-Year-Old Season

Satono Diamond returned to in following a disappointing unplaced finish in the 2017 . His five-year-old campaign began on March 11 at Chukyo Racecourse, where he finished third in the Kinko Sho () over 2000 meters, beaten by half a length for second after a strong closing effort. Two weeks later, on April 1 at , he ran seventh in the Osaka Hai (G1) over 2000 meters, fading in the straight after tracking the pace. After a summer break, Satono Diamond resumed in June with a sixth-place finish in the Takarazuka Kinen (G1) at over 2200 meters, unable to quicken in the testing conditions. He then secured his sole victory of the year on October 8 at , winning the Kyoto Daishoten () over 2400 meters by a half-length under Kawada, holding off Red Genova in a tactical affair that showcased his stamina. However, form declined thereafter, with sixth-place efforts in the (G1) at on November 25 over 2400 meters and the Arima Kinen (G1) at Nakayama on December 23 over 2500 meters, his career finale. Satono Diamond's retirement was announced at the end of the 2018 season due to his waning competitiveness, preserving his value for breeding. He was immediately shipped to in to begin stallion duties. The year yielded 6 starts, 1 win, and 1 third; across his career of 18 outings, he recorded 8 wins, 1 second, 3 thirds, and total earnings of ¥865,124,000.

Stud Career

Retirement and Stallion Debut

Satono Diamond from at the end of the 2018 season at the age of five, concluding his career after a sixth-place finish in the Arima Kinen. He transitioned immediately to the breeding shed and began his career at in , , where he was based for his initial years. His debut stud fee was set at ¥3,000,000, payable upon registration, reflecting confidence in his potential as a sire. In his first season at stud in 2019, Satono Diamond was fully booked, covering a substantial number of mares to produce his initial crop, which would race starting in 2022. As a son of the legendary Deep Impact, who himself became one of Japan's most influential sires with numerous Group 1 winners among his progeny, Satono Diamond was anticipated to excel in imparting stamina to his offspring, given his own successes in long-distance Grade 1 races over 2,400 meters and beyond. Breeders viewed him as a promising successor in Deep Impact's lineage, capable of continuing the line's reputation for producing durable middle-distance and staying types. Early reports from his stallion career indicated no health or fertility concerns, with Satono Diamond settling well into his new role and exhibiting strong vitality during his introductory breeding season. This smooth start bolstered expectations for a productive stud career, free from the complications that sometimes affect newly retired champions.

Breeding Record

By 2025, Satono Diamond had sired five crops of racing age, resulting in approximately 427 foals, from which his progeny secured 143 wins under Japan Racing Association (JRA) rules. These offspring demonstrated solid performance metrics, with an overall win rate reflecting consistent contributions to the Japanese racing scene. His first winner, Diamond Hands, emerged in 2022, marking an early milestone in his breeding career. In terms of stakes success, Satono Diamond produced 5 graded stakes winners (GSW), including 4 at the Group 3 level, while black-type winners accounted for roughly 10% of his total runners. The cumulative earnings of his progeny surpassed ¥2 billion by 2025, with notable peak performance during the 2023-2024 seasons as his earlier crops matured. Satono Diamond's initial stud fee at was ¥3,000,000 upon entering stud in 2019, later decreasing to ¥1,500,000 by 2024 in line with progeny results. His foals have excelled particularly in middle-distance races ranging from 2000 to 2500 meters, showcasing stamina inherited from his lineage. Compared to the expansive influence of his Deep Impact, who dominated leading sire lists for over a decade, Satono Diamond's impact remains more targeted but promising within specialized categories.

Notable Progeny

Satono Diamond's first crop to race, foaled in , has produced several graded stakes winners that highlight his early influence as a . Among them, Satono Glanz stands out as the most accomplished, securing victories in the G2 Kyoto Shimbun Hai over 2,200 meters at Kyoto Racecourse in May 2023 and the G2 Kobe Shimbun Hai over 2,400 meters at Hanshin Racecourse in September 2023, where he set a new course record of 2:23.5. Shinryokuka, another 2020 foal, emerged as a consistent performer, culminating in a win in the G3 Niigata Kinen over 2,000 meters at Niigata Racecourse on September 1, 2024, under Hatsuya Kowata, edging out Seleccion by a nose in a time of 1:58.0. From his 2021 crop, Allnatt achieved the first graded stakes success for that year group by winning the over 2,000 meters at Racecourse on September 13, 2025, ridden by Joao Moreira, demonstrating strong stamina inherited from his . Diamond Hands marked Satono Diamond's initial breakthrough as a sire with his maiden victory on June 4, 2022, at Chukyo Racecourse over 1,600 meters on turf, becoming the first winner from the stallion's debut crop at age two. Younger progeny continue to show promise into 2025, with the 2022 crop including Vip Daisy, who placed second in the G1 at Racecourse in December 2024 after two prior wins, signaling potential for further black-type success. By November 2025, Satono Diamond's early daughters from the 2020 crop, now five-year-olds, have begun entering broodmare bands, offering initial insights into his maternal line influence.

Assessment and Awards

Racing Honors

Satono Diamond received significant recognition from the (JRA) for his performances in 2016, particularly highlighted by his victories in the Kikuka Sho and Arima Kinen. In the JRA Awards for that year, he was named the Best Three-Year-Old Colt, securing 286 out of 291 votes from media representatives, a near-unanimous endorsement reflecting the impact of his autumn campaign that included those two Grade 1 triumphs. He also finished as runner-up in the Horse of the Year poll, earning 66 votes out of 291, behind Kitasan Black's 134, underscoring his status among Japan's elite despite competing primarily in stamina-testing long-distance races. These honors positioned Satono Diamond as a leading stayer, with his Kikuka Sho win—Japan's premier 3,000-meter test—playing a pivotal role in the voter sweep toward his divisional award. Financially, Satono Diamond led all three-year-olds in stakes earnings for , amassing ¥61,711,000, more than double that of the runner-up . Based in , he did not contend for international accolades such as the Eclipse Awards, which recognize North American achievements.

Rankings and Legacy

Satono Diamond achieved a rating of 127 in , placing him tied for 22nd in the global rankings that year. In the IFHA World's Best Racehorse Rankings for , he earned a rating of 122, tying for 18th overall and ranking third among three-year-olds worldwide. These assessments underscored his status as one of Japan's elite middle-distance performers, particularly after victories in the Kikuka Sho and Kinen. A defining aspect of Satono Diamond's legacy lies in his intense rivalry with , which captivated Japanese racing fans through several high-stakes confrontations. The pair first clashed in the 2016 Arima Kinen, where Satono Diamond edged by a neck in a thrilling finish, and they renewed their battle in the 2017 Tenno Sho (Spring), where Satono Diamond finished third behind . This competition highlighted Satono Diamond's stamina and resilience, contributing to a narrative of mutual elevation among Japan's top stayers during the mid-2010s. As a son of Deep Impact, Satono Diamond played a pivotal role in perpetuating the influential male line of the legendary , whose progeny dominated Japanese racing in the 2010s. His own racing achievements, including two Grade 1 wins, helped solidify Deep Impact's legacy as a producer of classic-distance champions before the 's death in 2019. By 2025, Satono Diamond's contributions to this lineage were further affirmed through his emerging success at stud, where his first crop produced stakes winner Satono Glanz, a Group 2 victor in 2023 whose performances set course records and signaled the line's ongoing vitality. In broader cultural impact, Satono Diamond has been immortalized in media, notably as a central character in the multimedia franchise Uma Musume Pretty Derby. Portrayed as a determined rival to in the anime's third season (2021), his story emphasizes themes of perseverance and rivalry; by 2025, expansions including new support cards in the —such as the July Spotlight Scout featuring "The Will to Overtake"—continued to highlight his enduring popularity among global fans. Compared to contemporaries like , a versatile speedster who dominated sprints to middle distances with multiple triumphs, Satono Diamond distinguished himself as a stamina specialist, excelling over 2,400 meters and beyond but facing challenges against quicker rivals in shorter tests, as seen in his sixth-place finish to her in the 2018 . His fourth-place finish in the 2017 Prix Foy in represented a bold international foray, followed by a poor performance in the . By 2025, reflections on his career emphasized how his breeding success has retroactively enhanced his racing reputation, positioning him as a bridge between Deep Impact's era and future generations of Japanese Thoroughbreds.

Pedigree and Ancestry

Pedigree

Satono Diamond is a bay horse foaled on January 30, 2013, in Japan. His sire is the acclaimed Deep Impact, a bay stallion born in 2002 who achieved the Japanese Triple Crown in 2005, siring numerous champions before his death in 2019. His dam is Malpensa, a bay mare born in 2006 in Argentina, by Orpen out of Marsella, bringing South American Thoroughbred influences to his lineage. The following is a standard 5-generation pedigree table, tracing key ancestors on both sire and dam sides. Notable influences include the grandsire , a leading sire in , and repeated bloodlines, which are prominent in modern for speed and stamina. The dam's line incorporates Argentine breeding traditions through Southern Halo, a sire in .
GenerationPaternal Line (Sire Side)Maternal Line (Dam Side)
1 (Parents)Deep Impact (bay, 2002; Japanese Triple Crown winner, 2005)Malpensa (bay, 2006; Argentine-bred)
2 (Grandparents)Sunday Silence (black, 1986; U.S. champion miler, leading Japanese sire)
Wind in Her Hair (bay, 1991; Breeders' Cup Distaff winner, 1993)		Orpen (bay, 1996; European Group 1 winner)
Marsella (dark bay, 1997; Argentine-bred)
3 (Great-Grandparents)Halo (black, 1969; U.S. stakes winner)
Wishing Well (dark bay/brown, 1975; U.S. Grade 1 winner)
Alzao (bay, 1980; U.S.-bred European sire)
Burghclere (bay, 1977; Irish stakes-placed)		Lure (bay, 1989; two-time Breeders' Cup Mile winner, 1992 & 1993)
Bonita Francita (bay, 1987; unraced Canadian-bred mare)
Southern Halo (bay, 1983; Argentine Horse of the Year, 1986; influential sire)
Riviere (chestnut, 1978; Argentine-bred)
4 (Great-Great-Grandparents)Hail to Reason (bay, 1958; U.S. champion and leading sire)
Nona (bay, 1949; U.S.-bred)
Cosmic Bomb (bay, 1944; U.S. stakes winner)
Almahmoud (chestnut, 1947; U.S. broodmare)
Understanding (chestnut, 1963; U.S. stakes winner)
Pretty Ways (bay, 1953; U.S.-bred)
Montparnasse II (bay, 1956; French sire)
Edelweiss (bay, 1959; U.S.-bred)
Lyphard (bay, 1969; U.S. champion and leading European sire)
Goofed (chestnut, 1960; U.S. champion three-year-old filly, 1963)
Sir Ivor (bay, 1965; U.S.-bred Epsom Derby winner, 1968)
Pocahontas (bay, 1955; U.S.-bred)
Crepello (chestnut, 1954; British leading sire)
Sans Le Sou (bay, 1957; French-bred)
Queens Hussar (bay, 1960; British stakes winner)
Highlight (bay, 1958; British-bred)		Danzig (bay, 1977; influential U.S. sire, undefeated on track)
Pas de Nom (bay, 1968; U.S.-bred)
Alydar (dark chestnut, 1975; U.S. champion)
Chappaquiddick (dark bay/brown, 1968; U.S.-bred stakes-placed)
Halo (black, 1969; as above)
Ballade (bay, 1972; U.S. stakes winner)
Hoist the Flag (bay, 1968; U.S. champion two-year-old, 1967)
Natalma (bay, 1957; Canadian broodmare of the year)
Halo (black, 1969; as above)
Northern Sea (bay, 1974; U.S. stakes winner)
Buckpasser (dark bay/brown, 1963; U.S. Horse of the Year, 1966)
Smart Deb (bay, 1960; U.S.-bred stakes-placed)
Tatan (chestnut, 1952; Argentine sire)
Ravana (bay, 1940; Argentine-bred)
5 (Great-Great-Great-Grandparents)Turn-To (bay, 1951; U.S. leading sire)
Source Sucree (chestnut, 1940; French import)
Bull Lea (brown, 1935; U.S. leading sire)
Rose Leaves (bay, 1940; U.S.-bred)
Pharamond (bay, 1920; French sire)
Cosmic (chestnut, 1935; U.S.-bred)
Almahmoud (chestnut, 1947; as above, repeated)
Bubbley (chestnut, 1940; U.S.-bred)
Prince John (bay, 1953; U.S. stakes winner)
Lady Sue (bay, 1941; U.S.-bred)
Heliopolis (bay, 1933; British import)
Sweet Louise (bay, 1946; U.S.-bred)
Nearco (bay, 1935; Italian undefeated champion)
Lady Angela (chestnut, 1941; British broodmare)
Native Dancer (gray, 1950; U.S. champion)
Lady Morvich (chestnut, 1945; U.S.-bred)
Sir Gallahad III (chestnut, 1920; French champion)
Quieth (bay, 1950; U.S.-bred)
Nearco (bay, 1935; as above)
Mumtaz Begum (gray, 1937; British-bred)
Royal Charger (gray, 1942; British sprinter)
Rebecca (chestnut, 1948; U.S.-bred)
Donatello II (bay, 1932; Italian Derby winner)
Polaire (chestnut, 1942; French-bred)
Sayajirao (bay, 1940; Irish St. Leger winner)
Soubrette (bay, 1952; French-bred)
Aureole (bay, 1950; British King George winner)
Agfa (chestnut, 1945; British-bred)
Abernant (bay, 1946; British sprint champion)
Sister Sarah (bay, 1949; U.S.-bred)
Palestine (bay, 1944; U.S. stakes winner)
Lady Sassoon (bay, 1954; British-bred)		Northern Dancer (bay, 1961; Canadian Triple Crown winner, leading sire)
Natalma (bay, 1957; as above)
Raise a Native (chestnut, 1961; U.S. leading sire)
Runaway Slip (bay, 1968; U.S.-bred)
Hail to Reason (bay, 1958; as above)
Ragtime (bay, 1961; U.S.-bred)
Tom Fool (bay, 1949; U.S. champion)
Cocotte (bay, 1945; French import)
Native Dancer (gray, 1950; as above)
Geisha (bay, 1948; U.S.-bred)
Hail to Reason (bay, 1958; as above)
Cosmah (bay, 1953; as above)
Northern Dancer (bay, 1961; as above)
Sea Saga (chestnut, 1968; U.S.-bred)
Northern Dancer (bay, 1961; as above, repeated)
Nantana (bay, 1966; Canadian-bred)
Tom Fool (bay, 1949; as above)
Busanda (bay, 1947; U.S. champion)
Better Self (bay, 1951; U.S. stakes winner)
Gay Debra (bay, 1955; U.S.-bred)
Relic (bay, 1939; French sire of champions)
Satana (chestnut, 1952; Argentine-bred)
Tahir (bay, 1947; Argentine sire)
Relámpago (chestnut, 1934; Argentine-bred)
This pedigree highlights the blend of Japanese, American, European, and Argentine bloodlines, with appearing at 5x5x5, underscoring his foundational role in contemporary genetics.

Family Background

Satono Diamond's paternal lineage traces through his sire Deep Impact, a dominant force in Japanese breeding who sired 59 winners and claimed the leading sire title in Japan for 11 consecutive years from 2012 to 2022. Deep Impact's success amplified the legacy of his own sire, , whose branches revolutionized by introducing a blend of speed and stamina; topped Japan's sire rankings for 13 straight years from 1995 to 2007 and remains the foundation of over half the field in major Japanese races. Among Deep Impact's standout progeny is Gentildonna, a dual Horse of the Year who swept the Japanese Fillies' Triple Crown in 2012 and secured victories in the and , exemplifying the line's prowess in middle-distance events. On the distaff side, Satono Diamond's Malpensa, a bay mare foaled in 2006, achieved prominence in with five wins, including three victories that established her as a high-class performer before her export to . Sired by the speedy winner Orpen—a July Cup victor over six furlongs whose Danzig-line influence often imparts precocity and acceleration—Malpensa descended from the Southern Halo mare Marsella, introducing robust South American blood renowned for durability and staying power in longer races. This dam line features Argentine stakes winners such as half-siblings to Malpensa, including the full brother Satono Genesis, further extend the family's racing influence without diluting its core strengths. The pedigree's blend anticipated Satono Diamond's aptitude for middle distances, with Deep Impact's proven excellence at 2000 meters and beyond complemented by Orpen's speed to balance potential stamina from Malpensa's Argentine heritage, which often yields horses capable of grinding out victories over testing ground. Notable inbreeding includes at 5x5x5 (9.38% coefficient), enhancing overall athleticism, and Halo at 3x4x5 (via and Southern Halo/Devils Bag lines). Malpensa's importation to Northern Farm underscored her value as a blue hen, leveraging her Grade 1 credentials to pair with elite Japanese sires for international potential.

References

  1. https://en.netkeiba.com/db/horse/2013106101/
  2. https://www.horseracingnation.com/horse/Satono_Diamond
  3. https://www.bloodhorse.com/horse-racing/articles/259336/diamond-hands-becomes-first-winner-for-satono-diamond
  4. https://www.jbis.jp/horse/0001175221/
  5. https://japanracing.jp/_news2016/161225.html
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  12. https://japanracing.jp/_news2019/190730.html
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