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Uncle Mo
Uncle Mo
Uncle Mo
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Uncle Mo
Uncle Mo (right) battles Caleb's Posse in the 2011 King's Bishop Stakes.
SireIndian Charlie
GrandsireIn Excess
DamPlaya Maya
DamsireArch
SexStallion
Foaled(2008-03-10)March 10, 2008
DiedDecember 19, 2024(2024-12-19) (aged 16)
CountryUnited States
ColourBay
BreederD. Michael Cavey
OwnerRepole Stable
TrainerTodd A. Pletcher
Record8: 5-1-1
EarningsUS$1,336,000
Major wins
Champagne Stakes (2010)
Timely Writer Stakes (2011)
Kelso Handicap (2011)
Breeders' Cup wins:
Breeders' Cup Juvenile (2010)
Awards
American Champion Two-Year-Old Colt (2010)

Uncle Mo (March 10, 2008 – December 19, 2024) was an American champion Thoroughbred racehorse who went undefeated in his two-year-old season and was named the American Champion Two-Year-Old of 2010. However, his three-year-old season was disrupted by illness, causing him to miss the Kentucky Derby. Retired to stud in 2012, he was the leading freshman sire with his first foal crop, which included 2016 Kentucky Derby winner Nyquist.

Racing career

[edit]

2010: two-year-old season

[edit]

In his first start, a maiden special weight on the Travers undercard at Saratoga, Uncle Mo led at every call to beat a field of 2-year-olds by 14 1/4 lengths. In his next start, the Grade I Champagne Stakes, he took the lead early and never looked back en route to a 5-length win in the time of 1:34 2/5 seconds—faster than Secretariat's 1972 Champagne win.

In the Grade I Breeders' Cup Juvenile, Uncle Mo won by four lengths over Grade 1 winner Boys at Tosconova.[1] He was voted the 2010 Eclipse Award as the American Champion Two-Year-Old Colt.[2]

2011: three-year-old season

[edit]

As the early favorite for the 2011 Kentucky Derby, the first leg of the U.S. Triple Crown series,[3] Uncle Mo made his 3-year-old debut in the Timely Writer, a one-turn mile overnight stakes at Gulfstream Park. After dawdling on the lead for the first three-quarters of a mile, he came home in 22 4/5 for the final quarter.

His next start was the Wood Memorial Stakes at Aqueduct on April 9.[4] Running 9 furlongs for the first time in his career, Uncle Mo was defeated by Toby's Corner and finished third.

After his upset at 1-10 odds, he was diagnosed with a gastrointestinal infection but was still sent to Churchill Downs in anticipation of a start in the Kentucky Derby. After finishing a course of antibiotics, regressing immediately after stopping medication, and losing over 70 pounds in the weeks before the Derby, he was scratched the day before the race.[5]

Sent to Winstar Farm to recuperate and receive attention from top veterinarians, Uncle Mo was diagnosed with cholangiohepatitis, a rare liver disease. He began treatment while continuing to rest at Winstar. After gaining back 110 pounds in two months, he returned to trainer Todd Pletcher's barn at Saratoga on July 11, 2011. The colt resumed training and finished second to Caleb's Posse in the 7-furlong King's Bishop Stakes on August 1, 2011. He then went on to win the Grade 2 Kelso Handicap at Belmont Park in wire to wire fashion.[6]

Retirement to stud

[edit]

Uncle Mo was retired from racing on November 10, 2011, shortly after finishing 10th in the Breeders' Cup Classic. His retirement was prompted by elevated levels of the liver enzyme GGT, which also occurred earlier in the season and led to a diagnosis of cholangiohepatitis.

Uncle Mo began standing at Ashford Stud, the American arm of Irish breeding giant Coolmore, for the 2012 Thoroughbred breeding season,[7] and later became a "shuttle stallion" servicing mares at Coolmore's American and Australian farms.[8][9]

Uncle Mo was the leading freshman sire of 2015 in North America and the overall leading sire of two-year-olds in Europe and North America.[10] In 2016, he was not only the leading second-crop sire, he also finished third in the general sire listing despite having only two crops of racing age.[11] His stud fee was increased to $150,000 for the 2017 season.[12]

On December 19, 2024, Mike Repole announced on his X account that Uncle Mo had been euthanized at the age of 16. He said that Uncle Mo had injured his left foreleg, and underwent surgery on the day before his death. "Uncle Mo was so much more to me than a champion and iconic stallion—he was and always will be part of my family," he said.[13]

Notable progeny

[edit]

Uncle Mo has sired 16 individual Grade I winners.

c = colt, f = filly, g = gelding

Foaled Name Sex Major Wins
2013 Gomo f Alcibiades Stakes
2013 Nyquist c Del Mar Futurity, FrontRunner Stakes, Breeders' Cup Juvenile, Florida Derby, Kentucky Derby
2013 Outwork c Wood Memorial Stakes
2013 Unbridled Mo f Apple Blossom Handicap
2014 Mo Town c Hollywood Derby
2015 Dream Tree f Starlet Stakes
2016 Mo Forza c Hollywood Derby
2017 Bast f Del Mar Debutante Stakes, Chandelier Stakes, Starlet Stakes
2017 Yaupon c Forego Stakes
2018 Golden Pal c Breeders' Cup Turf Sprint
2019 Mo Donegal c Belmont Stakes
2019 Adare Manor f Clement L. Hirsch Stakes (2023, 2024)
2019 A Mo Reay f Beholder Mile Stakes
2020 Arabian Knight c Pacific Classic Stakes
2020 Kingsbarns c Stephen Foster Stakes
2021 Seismic Beauty f Clement L. Hirsch Stakes

Race record

[edit]
Date Track Race Distance Finish
8/23/2010 Saratoga Maiden 6 Furlongs 1
10/9/2010 Belmont Park Champagne Stakes 8 Furlongs 1
11/6//2010 Churchill Downs Breeders' Cup Juvenile 8 ½ Furlongs 1
3/12/2011 Gulfstream Park Timely Writer Stakes 8 Furlongs 1
4/9/2011 Aqueduct Wood Memorial 9 Furlongs 3
8/27/2011 Saratoga King's Bishop Stakes 7 Furlongs 2
10/1/2011 Belmont Park Kelso Handicap 8 Furlongs 1
11/5/2011 Churchill Downs Breeders' Cup Classic 10 Furlongs 10

Pedigree

[edit]
Pedigree of Uncle Mo
Sire
Indian Charlie 		In Excess Siberian Express Caro
Indian Call
Kantado Saulingo
Vi
Soviet Sojourn Leo Castelli Sovereign Dancer
Suspicious Native
Political Parfait Diplomat Way
Peach Butter
Dam
Playa Maya 		Arch Kris S. Roberto
Sharp Queen
Aurora Danzig
Althea
Dixie Slippers Dixieland Band Northern Dancer
Mississippi Mud
Cyane's Slippers Cyane
Hot Slippers

References

[edit]

Sources

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Uncle Mo

View on Grokipedia
from Grokipedia
Uncle Mo (March 10, 2008 – December 19, 2024) was an American racehorse renowned for his brilliant undefeated campaign as a two-year-old in 2010, which included dominant victories in the Champagne Stakes (G1) at and the Breeders' Cup Juvenile (G1) at , earning him the as American Champion Two-Year-Old Male Horse. Bred in by Dr. D. Michael Cavey and purchased as a yearling for $220,000 by owner of Repole Stable, Uncle Mo was sired by Indian Charlie out of the Arch mare Playa Maya. Trained by Hall of Famer , he began his career with a stunning 14¼-length maiden win at in August 2010, followed by his two Grade 1 triumphs later that year, amassing earnings of over $1.6 million across eight career starts with five victories, one second, and one third. As a three-year-old in 2011, health challenges including a gastrointestinal illness sidelined him from the trail after a third-place finish in the Wood Memorial Stakes (G1), but he rebounded to win the Timely Writer Stakes, place second in the Forego Stakes (G1), capture the Kelso Handicap (G2), and win the Forty Niner Stakes (G2) before fading to 10th in the Breeders' Cup Classic (G1). Retired to stud at Coolmore America's Ashford Stud in in 2012 with an initial fee of $35,000, Uncle Mo quickly established himself as a premier sire, topping the North American freshman sire list by earnings in 2015 and ranking second on the general sire list in 2020, third in 2016 and 2023, and fourth in 2022. From 11 crops of racing age, he sired over 900 winners (including 114 stakes winners) who earned more than $130 million as of early 2025, with his stud fee reaching $125,000 live for 2025. Among his most notable progeny were Nyquist, the 2016 (G1) winner and Award-winning two-year-old male; Mo Donegal, victor of the (G1); and Golden Pal, a two-time winner in the Juvenile Turf Sprint (G2) and Turf Sprint (G1). Uncle Mo was euthanized at age 16 following a left foreleg injury, leaving a profound legacy in and breeding.

Background

Birth and Early Ownership

Uncle Mo, a bay Thoroughbred colt, was foaled on March 10, 2008, in Kentucky. He was bred by Dr. D. Michael Cavey, a veterinarian and horse enthusiast based in the state. He sold as a weanling for $160,000 at the 2008 Keeneland November Breeding Stock Sale before entering the yearling market. From a young age, Uncle Mo displayed promising physical attributes, standing approximately 16 hands tall with a powerful, muscular build and deep body that suggested both speed and durability, traits influenced briefly by his sire Indian Charlie's lineage known for precocity. As a , Uncle Mo entered the market at the September Sale in 2009, where he was consigned by Taylor Made Sales Agency on behalf of his breeder. He attracted attention for his conformation and was purchased by entrepreneur for $220,000, marking the beginning of his association with Repole Stable. This acquisition represented a strategic for Repole, who was building his racing operation with an eye toward high-potential juveniles. Following the sale, Uncle Mo was sent to Ocala, Florida, for initial breaking and training under James Crupi, a respected conditioner known for preparing young horses with careful attention to their development. This pre-racing phase highlighted Uncle Mo's natural athleticism, as he matured into a robust individual ready for competitive pursuits.

Pedigree

Uncle Mo was sired by Indian Charlie, a Grade 1-winning son of In Excess (Ire) whose progeny were renowned for their sprinting speed and success in races, including champions like Indian Blessing and Fleet Indian. Indian Charlie himself excelled at middle distances, winning the and finishing second in the 1998 , traits that contributed to Uncle Mo's precocious speed and class. His dam, Playa Maya, was an unraced daughter of the Grade 1 Super Derby winner Arch, a versatile sire known for producing stamina-laden runners capable of performing on both dirt and turf. Arch, out of the Danzig mare Aurora, sired multiple Grade 1 winners such as (Breeders' Cup Classic victor) and Will Take Charge (Clark Handicap and winner), underscoring the depth in Playa Maya's female line. Uncle Mo's extended pedigree features inbreeding to the influential (Can) at 4x5, with additional crosses in the fifth generation, providing a foundation for both explosive early speed and underlying stamina. Influences from the line appear through branches in the tail-female, enhancing precocity, while Secretariat's lineage filters in via Roberto on the side, contributing to classic potential and durability. The dam's family highlights the productive Arch line, with Playa Maya being the sole foal of her dam Dixie Slippers (by Dixieland Band), yet drawing from a broader lineage that has produced high-class runners like the Grade 1-placed Vatican and the stakes-winning Protonico, demonstrating the sire's ability to elevate unraced daughters into elite producers.
GenerationSire LineDam Line
1 (Self)Uncle Mo (2008, b.c. by Indian Charlie)
2Indian Charlie (1995, b.h. by In Excess (Ire))Playa Maya (2000, dkb/br.m. by Arch)
3In Excess (Ire) (1987, dkb/br.h. by Siberian Express)Arch (1995, dkb/br.h. by Kris S)
Dixie Slippers (1995, dkb/br.m. by Dixieland Band)
4Siberian Express (1981, gr.h. by Caro (Ire))
Kantado (1976, b.m. by Saulingo)		Kris S (1977, dkb/br.h. by Roberto)
Aurora (1988, b.m. by Danzig)
5Caro (Ire) (1967, gr.h. by Fortino (Fr))
Saulingo (1970, b.h. by Sing Sing (Fr))		Roberto (1969, b.h. by Hail to Reason)
Danzig (1977, b.h. by Northern Dancer (Can))

Racing Career

Two-Year-Old Season

Uncle Mo burst onto the racing scene with an impressive debut on August 28, 2010, in a six-furlong maiden special weight race at . Trained by Todd A. Pletcher and ridden by , the colt broke sharply from the gate and led throughout, drawing off to win by 14¼ lengths in a time of 1:09.21 while earning a of 102. This dominant performance, reflective of the speed inherited from his sire Indian Charlie, immediately marked him as a top juvenile prospect. Just over five weeks later, Uncle Mo stepped up to stakes company in the Grade 1 Champagne Stakes at on October 9, 2010. again guided the 1-5 favorite as he set a fast pace, completing the one-mile distance in 1:34.51 before pulling clear to win by 4¾ lengths over Mountain Town. The victory netted $180,000 and solidified his status as the leading contender for juvenile honors, with an Equibase speed figure of 110 highlighting his precocity under Pletcher's guidance. Uncle Mo concluded his undefeated two-year-old campaign in the $2 million Grey Goose (G1) at on November 6, 2010. Breaking from post 7 under , he settled off a moderate pace before surging to the lead in the stretch and winning by 4¼ lengths over Boys at Tosconova in a final time of 1:42.60. The performance earned an Equibase speed figure of 116 and clinched the as American Champion Two-Year-Old Colt later that year. From three starts, all victories, Uncle Mo amassed $1,302,500 in earnings.

Three-Year-Old Season

Uncle Mo entered his three-year-old season carrying strong momentum from his undefeated juvenile campaign, which had established him as an early favorite for the . He began 2011 with a victory in the Timely Writer Stakes at on March 12, winning by 3¾ lengths as the heavy favorite in his seasonal debut over one mile. However, his form faltered in the Wood Memorial Stakes (G1) at Aqueduct on April 9, where he finished third behind Toby's Corner after leading into the stretch but tiring late over 9 furlongs. A gastrointestinal illness struck in late , leading to his scratching from the on May 7 at , where he had been the second choice in the morning line. The condition, later diagnosed as cholangiohepatitis—a severe of the liver and ducts—sidelined him for several months, prompting a cautious approach to his return. After a four-month , Uncle Mo resumed in the King's Bishop Stakes (G1) at Saratoga on August 27, finishing a close second by a to Caleb's Posse in a thrilling seven-furlong sprint. He rebounded in his next outing, capturing the Kelso Handicap (G2) at on October 1 by three lengths over Jackson Bend in a commanding performance at one mile. Uncle Mo's campaign concluded with a disappointing 10th-place finish in the Breeders' Cup Classic (G1) at on November 5. On November 10, connections announced his retirement due to ongoing health concerns related to the liver ailment, ending the season with five starts, two wins, one second, and one third while earning $303,500.

Race Record

Uncle Mo's racing career consisted of 8 starts on dirt, resulting in a record of 5 wins, 1 second, 1 third, with total earnings of $1,606,000. He remained undefeated in his three races as a two-year-old, earning him the title of American Champion Two-Year-Old Colt for 2010. Uncle Mo was also entered but scratched from the 2011 due to illness.
DateTrackRaceDistanceFinishJockey
08/28/2010SaratogaMaiden Special Weight6 furlongs1st
10/09/2010Champagne Stakes (G1)1 mile1st
11/06/2010 (G1)1 1/16 miles1st
03/12/2011Timely Writer Stakes (L)1 mile1st
04/09/2011Aqueduct (G1)1 1/8 miles3rd
08/27/2011SaratogaKing's Bishop Stakes (G1)7 furlongs2nd
10/01/2011Kelso Handicap (G2)1 mile1st
11/05/2011 (G1)1 1/4 miles10th

Stud Career

Retirement and Initial Breeding

Following his retirement from in late 2011 due to a lingering gastrointestinal illness that had sidelined him earlier in the year, Uncle Mo transitioned directly to the breeding shed as part of a deal with Coolmore America's Ashford Stud. The agreement, struck in October 2011 between owner and Ashford, was believed to value the champion at approximately $10 million, with escalator clauses tied to future Grade 1 victories, though Repole retained full racing rights until the horse's official retirement after the Breeders' Cup Classic. Uncle Mo had fully recovered from the illness by the end of his racing career, showing no major health setbacks as he began stud duties. Uncle Mo stood his inaugural season in 2012 at Ashford Stud, located in , as a key component of Coolmore's North American operations. His initial stud fee was set at $35,000 live foal, reflecting high expectations for the undefeated juvenile champion sired by Indian Charlie. The horse covered a strong book of mares that year, including several stakes winners, which helped establish his early demand in the breeding market. By 2016, buoyed by promising early results from his progeny, Uncle Mo's fee had risen to $75,000, signaling growing confidence among breeders. Uncle Mo's first crop, foaled in 2013 and racing as two-year-olds in 2015, quickly validated the investment, topping the North American freshman list with progeny earnings exceeding $3.67 million through December of that year—a mark that set a then-record for the category. Among the standout early performers was Gomo, a who achieved Grade 1-winning status in her juvenile season, contributing to the crop's impressive debut. This success underscored Uncle Mo's precocity as a , mirroring his own racing style, with no reported breeding-related health concerns emerging during this transitional period.

Achievements as a Sire

Uncle Mo achieved significant success as a sire, establishing himself as one of North America's most influential stallions through consistent production of high-earning progeny. He set a North American record for freshman sire progeny earnings in 2015 with over $3.67 million from his first crop, led by winner Nyquist, surpassing previous benchmarks set by . In 2016, his second-crop year, Uncle Mo ranked third overall among North American sires by progeny earnings, benefiting substantially from Nyquist's continued success that year, while also claiming the leading second-crop sire title. Lifetime, he sired 109 stakes winners, including 16 Grade 1 winners, from 10 crops of racing age, with progeny earnings exceeding $124.9 million as of late 2024. His stud fee reflected his rising prominence, increasing from $75,000 in 2016 to a peak of $175,000 in 2021, before settling at $150,000 for 2022-2024. At the height of his popularity, Uncle Mo covered a peak of 257 mares in 2020, the highest number for any North American stallion that year, and 253 in 2016, contributing to a career total of approximately 1,896 foals in the Northern Hemisphere alone. His 2015 crop, which included Nyquist, generated over $3.67 million in earnings during their freshman season, while subsequent crops maintained strong performance, with his runners achieving 887 winners from 1,320 starters lifetime. Uncle Mo ranked among North America's top sires by earnings multiple times, including third in 2020, sixth in 2022, fourth in 2023, and eighth in 2024, demonstrating sustained impact even in later seasons. He emerged as a of sires, with sons like Nyquist establishing successful stud careers and contributing to his broader influence. In his final seasons at age 15 and 16, demand remained high, as he covered 243 mares in 2023 and 202 mares in 2024 at Ashford Stud.

Death and Legacy

Circumstances of Death

Uncle Mo, the champion Thoroughbred stallion, was euthanized on December 19, 2024, at the age of 16 while at Coolmore America's Ashford Stud in Versailles, Kentucky. The stallion suffered a sudden injury to his left foreleg, which prompted emergency surgery on December 18 performed by veterinarians from the Hagyard Equine Medical Institute, including Dr. Barry David, Dr. Bob Hunt, and Dr. Cole Sandow. Despite these efforts, recovery proved too challenging, leading to the decision to euthanize him on veterinary advice the following day. Uncle Mo had been actively breeding during the 2024 season, covering over 200 mares, with no reported health issues prior to the injury. Coolmore America announced the news on December 19, 2024, through farm manager Dermot Ryan, who expressed profound shock at the loss of the influential sire. Owner shared the announcement on , stating his devastation and noting the shared heartbreak among the Repole Stable, , and Coolmore families. Uncle Mo was buried at Ashford Stud, where he had stood since 2012. Tributes poured in from key figures in Uncle Mo's career. Repole described him as "part of my family" and credited trainer for his perfect handling during racing days, emphasizing the stallion's irreplaceable impact. was acknowledged by Coolmore for training Uncle Mo to championship level, while Ryan highlighted his exceptional contributions as a and thanked all involved in his success.

Lasting Impact

Uncle Mo's tenure as a profoundly bolstered Coolmore's dominance in the American breeding landscape, establishing Ashford Stud as a cornerstone of high-caliber operations through his perennial rankings among the top sires. His consistent production of elite performers transformed the farm's stallion roster, filling a critical gap in U.S.-based speed influences while enhancing Coolmore's global network. This shift underscored a strategic emphasis on sires blending explosive early speed with sustained performance, influencing industry trends toward versatile bloodlines that appeal to both commercial and racing markets. Economically, Uncle Mo's legacy is evident in the robust market for his offspring, reflecting the premium placed on his . These figures not only generated significant returns for but also amplified Ashford Stud's prestige, attracting top-tier mares and solidifying its role as a breeding powerhouse within the Coolmore . His contributions extended the farm's economic influence, supporting ancillary industries from auctions to training facilities. Among his accolades, Uncle Mo secured leading sire titles as the champion freshman in 2015 and second-crop sire in 2016, while finishing third overall on the general sires list in both 2016 and 2020. These honors highlighted his exceptional fertility and class transmission, with additional top-10 placements in 2021, 2022, 2023, and 2024 affirming his sustained excellence. Beyond , Uncle Mo's reach shaped global breeding dynamics through widespread semen exports, integrating his speed-oriented lineage into international programs and broadening Coolmore's footprint. His progeny reinvigorated competition at classic distances, promoting a resurgence in stamina-infused speed that aligned with evolving race conditions worldwide. Into 2025, his enduring value manifests in thriving progeny lines, ensuring ongoing contributions to the breed despite the cessation of his active career.

Notable Progeny

Champion Offspring

Among Uncle Mo's most celebrated progeny is Nyquist, a 2013 foal out of the mare Seeking Gabrielle. As a two-year-old, Nyquist swept major juvenile stakes including the Grade 1 Del Mar Futurity, FrontRunner Stakes, and , earning the as American champion two-year-old male for 2015. In 2016, he became the first horse since Apollo in 1882 to enter the undefeated, going on to win that classic and the before finishing a close third in the . Another standout classic winner is Mo Donegal, a 2019 foal out of the mare Callingmissbrown. Trained by , he broke his maiden impressively at Saratoga as a juvenile and placed in the Grade 1 Champagne Stakes before a strong sophomore campaign that included a victory in the Grade 2 Wood Memorial. Mo Donegal capped his season with a dominant win in the , defeating stablemate Nest by three lengths while covering 1 ½ miles in 2:28.28, and later competed creditably in the Grade 1 . Uncle Mo also sired several other Grade 1 stars, including , a 2014 foal who won the Grade 1 Champagne and Hopeful Stakes as a juvenile and added victories in the Grade 1 H. Allen Jerkens Stakes and Grade 3 Dwyer Stakes as a three-year-old. Among the fillies, Bast, a 2014 foal out of the Arch mare Laffina, secured the 2017 Coaching Club American Oaks by 5 ½ lengths at , showcasing classic stamina in her only start that year before retiring to produce her own stakes winners. On turf, Golden Pal emerged as a speedster with multiple Grade 1 triumphs, including the 2020 Breeders' Cup Juvenile Turf Sprint and the 2021 Breeders' Cup Turf Sprint. These champion offspring highlight Uncle Mo's versatility as a , with progeny inheriting his precocious speed to excel in juvenile divisions while some demonstrated the added stamina required for classic distances up to 1 ¼ miles. Classic winners like Nyquist and Mo Donegal benefited from dams with proven middle-distance aptitude, such as Seeking Gabrielle's line tracing to successful routers and Callingmissbrown's relation to , a noted stamina influence. Overall, such high-caliber performers helped elevate Uncle Mo to among the top 10 active North American sires by lifetime progeny earnings.

Recent Progeny Developments

In 2025, Uncle Mo's three-year-old crop, consisting of his 2022 foals, demonstrated a strong start to the season, highlighted by the impressive debut of Jude, a $2 million purchase from the 2023 September sale. Trained by for Zedan Racing Stables, the colt won his maiden race by 5¼ lengths at on October 10, 2025, earning Thoroughbred Daily News Rising Star status and signaling potential for further success among this group. This performance contributed to a hot streak for the crop, building on the momentum from their juvenile year. Auction results in 2025 underscored the sustained commercial appeal of Uncle Mo's progeny following his death in December 2024. A notable highlight was the $1.3 million sale of Bishops Bay, a multiple Grade 3 winner and son of Uncle Mo, during the November Horses of Racing Age Sale on November 12, 2025, to Pedro Lanz, agent for KAS Stables. These figures reflect robust market confidence in his genetic legacy. Emerging winners from Uncle Mo's 2022 and 2023 crops continued to show promise in graded stakes during 2024 and 2025, particularly in juvenile divisions. For instance, Showcase, a 2022 , secured victory in the Grade 2 Saratoga Special Stakes on August 10, 2024, leading an Uncle Mo exacta and marking his sire's 103rd stakes winner worldwide. The 2022 crop exhibited momentum in juvenile races throughout 2024, while early 2025 results from the 2023 foals suggested ongoing quality in sprint and route events. Post-death, demand for Uncle Mo's bloodlines persisted through high-value sales of half-siblings to his top performers, maintaining his influence in the breeding shed despite the absence of new live foals.

References

  1. https://www.equibase.com/profiles/Results.cfm?type=Horse&refno=8292193&registry=T
  2. https://breederscup.com/horses/hall-of-champions/2010/juvenile/uncle-mo
  3. https://www.bloodhorse.com/horse-racing/articles/281729/ashford-stallion-uncle-mo-dies-at-age-16
  4. https://www.racingpost.com/bloodstock/news/international/death-of-coolmore-americas-sire-uncle-mo-aged-16-axwPM5q6HKBK
  5. https://www.horseracingnation.com/horse/Uncle_Mo
  6. https://www.bloodhorse.com/horse-racing/articles/136995/uncle-mo-a-towering-presence-in-wood
  7. https://www.bloodhorse.com/horse-racing/articles/134019/uncle-mo-makes-statement-in-kelso-romp
  8. https://paulickreport.com/news/bloodstock/devastated-and-saddened-champion-leading-sire-uncle-mo-euthanized-at-age-16
  9. https://www.americanclassicpedigrees.com/uncle-mo.html
  10. https://www.bloodhorse.com/stallion-register/stallions/119257/uncle-mo
  11. https://www.drf.com/news/kentucky-stallions-nyquist-carries-legacy-late-sire-uncle-mo
  12. https://paulickreport.com/features/american-graded-stakes-standings/keeneland-presents-american-graded-stakes-standings-repole-s-investment-goes-beyond-derby
  13. https://www.gainesville.com/story/news/2011/05/06/ocala-trained-uncle-mo-scratched-from-kentucky-derby/31802704007/
  14. https://www.bloodhorse.com/horse-racing/articles/138864/welcome-to-the-top-indian-charlie
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  18. https://claibornefarm.com/history/hof/arch/
  19. https://www.kentucky.com/sports/horses/article55794155.html
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  21. https://www.espn.com/horse-racing/story/_/id/15052785/uncle-mo-rare-company
  22. https://www.allbreedpedigree.com/uncle+mo
  23. https://www.thoroughbreddailynews.com/taking-stock-mr-prospector-is-the-most-influential/
  24. https://www.thoroughbreddailynews.com/span-of-arch-legacy-growing/
  25. https://www.horseracingnation.com/blogs/pedigree_power/The_Legacy_of_Arch_123
  26. https://www.bloodhorse.com/horse-racing/articles/133227/champion-uncle-mo-retired-to-ashford-stud
  27. https://www.horseracingnation.com/news/Uncle_Mo_Heavy_Favorite_in_Champagne_123
  28. https://www.horseracingnation.com/news/Uncle_Mo_Crusies_in_2010_Champagne_123
  29. https://www.timesunion.com/sports/article/Uncle-Mo-toast-of-Champagne-696294.php
  30. https://www.equibase.com/static/statistics/2010/eleaders.html
  31. https://www.bloodhorse.com/horse-racing/articles/139541/uncle-mo-blows-his-foes-away-in-bc-juvenile
  32. https://www.breederscup.com/horses/hall-of-champions/2010/juvenile/uncle-mo
  33. https://www.bloodhorse.com/horse-racing/articles/136413/uncle-mo-scratched-out-of-kentucky-derby
  34. https://vindyarchives.com/news/2011/mar/13/8216uncle-mo8217-wins-timely-writer/
  35. https://www.nytimes.com/2011/04/10/sports/10racing.html
  36. https://www.nytimes.com/2011/05/07/sports/07racing.html
  37. https://www.nytimes.com/2011/06/04/sports/uncle-mo-found-to-have-liver-disease.html
  38. https://www.horse-races.net/library/trav11-results.htm
  39. https://paulickreport.com/news/uncle-mo-ashford-stud-deal-believed-to-be-worth-10-million
  40. https://www.horseracingnation.com/news/Uncle_Mo_to_Ashford_Stud_Upon_Retirement
  41. https://coolmore.com/farms/america/news/uncle-mo-retired-to-ashford-stud
  42. https://www.drf.com/news/uncle-mo-leads-new-class-kentucky-sires
  43. https://www.bloodhorse.com/horse-racing/articles/211851/what-is-uncle-mo-worth
  44. https://www.bloodhorse.com/horse-racing/articles/204044/leading-first-crop-sire-uncle-mo
  45. https://www.truenicks.com/articles/281729/ashford-stallion-uncle-mo-dies-at-age-16
  46. https://www.bloodhorse.com/horse-racing/articles/275841/uncle-mo-continues-exhibiting-exceptional-consistency
  47. https://www.thoroughbreddailynews.com/impactful-sire-uncle-mo-passes-away-following-injury/
  48. https://www.thoroughbreddailynews.com/in-mares-bred-category-uncle-mo-back-on-top/
  49. https://www.bloodhorse.com/horse-racing/articles/215999/report-dips-in-stallion-mares-bred-numbers
  50. https://truenicks.com/articles/281729/ashford-stallion-uncle-mo-dies-at-age-16
  51. http://www.equineline.com/extendedcontent/bh.cfm?StallionRef=8292193&rtype=stats
  52. https://www.truenicks.com/articles/276401/uncle-mo-back-in-customary-position-among-top-10-sires
  53. https://coolmore.com/farms/america/news/uncle-mo-2008-2024
  54. https://paulickreport.com/news/ray-s-paddock/view-from-the-eighth-pole-shiny-object-syndrome-and-the-race-to-the-breeding-shed/
  55. https://www.kentucky.com/sports/horses/article297375584.html
  56. https://coolmore.com/farms/america/news/uncle-mo-a-perennial-top-10-stallion
  57. https://www.thoroughbredracing.com/articles/2282/carrying-momentum-one-career-another-uncle-mo-starts-swiftly-stud/
  58. https://www.bloodhorse.com/horse-racing/articles/276401/uncle-mo-back-in-customary-position-among-top-10-sires
  59. https://theownerbreeder.com/columns/sexton-mo-void/
  60. https://www.forbes.com/sites/mattrybaltowski/2016/05/07/as-post-american-pharoah-triple-crown-era-begins-a-rivalry-is-born-between-tapit-and-uncle-mo/
  61. https://www.drf.com/news/2015-eclipse-awards-nyquist
  62. https://www.equibase.com/profiles/Results.cfm?refno=9492600&registry=T&type=Horse
  63. https://www.horseracingnation.com/horse/Mo_Donegal
  64. https://www.bloodhorse.com/horse-racing/articles/259508/mo-donegal-rolls-home-in-belmont-stakes
  65. https://www.thoroughbreddailynews.com/hey-jude-2m-uncle-mo-colt-a-new-tdn-rising-star-for-baffert-and-zedan/
  66. https://www.bloodhorse.com/horse-racing/articles/288579/multiple-g3-winner-bishops-bay-sells-for-1-3-million
  67. https://www.bloodhorse.com/stallion-register/stallions/119257/uncle-mo/auctions/2025
  68. https://www.thoroughbreddailynews.com/uncle-mo-rising-star-puts-on-a-show-in-saratoga-special/
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