Mark Kerr (fighter)

Mark Kerr (born December 21, 1968) is an American former wrestler and mixed martial artist. During his MMA career, he was a two-time UFC Heavyweight Tournament Champion, World Vale Tudo Championship tournament winner, and a PRIDE FC competitor. In collegiate wrestling, Kerr was an NCAA Division I champion. In freestyle wrestling, he won gold and silver medals at the World Cup and silver at the Pan American Games. In submission wrestling, Kerr is a four-time ADCC World Champion, winning his weightclass twice along with the absolute division and the Superfight Championship.

In 2002, Kerr was the subject of an HBO documentary titled The Smashing Machine, which detailed his MMA career fighting in Vale Tudo, the UFC and PRIDE. The Smashing Machine also focused on Kerr's struggle with substance abuse, his relationships with his then-girlfriend, various training partners, and friendship with Mark Coleman. A film of the same name by A24, starring Dwayne Johnson as Kerr, was released on October 3, 2025.

Mark Kerr was born in Toledo, Ohio to Tom and Mary Kerr. His father was Irish, and his mother was Puerto Rican. From early childhood, he would dream of being in the World Wrestling Federation and would hold mock fights with his younger siblings in the back yard.

In 1983, Kerr began his wrestling career in Bettendorf, Iowa as a freshman at Bettendorf High School where he shared the wrestling room with future UFC champion Pat Miletich, a senior at the time. After his freshman year at Bettendorf, Kerr and his family moved to Toledo, Ohio where he became a high school state champion for Toledo Waite.

At Syracuse University, Kerr was the Division I champion at 190 pounds and an All-American in 1992, defeating Randy Couture 12–4 in the final. He was also a three-time EIWA champion at 190 lb. (1989, 1991, 1992) and a runner-up in 1988, and won the Fletcher Award for scoring the most team points in 1991 and 1992. In 1992, Kerr came second at the World Cup, ahead of Kurt Angle. Kerr won the USA World Team Trials in 1993 and 1994, finishing 7th at the 1993 World Championships. In 1994, he won gold at the World Cup in Edmonton along with the USA Senior Freestyle Championship but did not medal at the World Championships. Kerr won silver in freestyle at the 1995 Pan American Games. After missing out on the 1996 Olympics, losing to Kurt Angle, Kerr decided to focus on MMA.

While training as an amateur wrestler, Kerr became interested in mixed martial arts as a way to earn money. He, his long-time friend and training partner Mark Coleman and Tom Erikson were initially scouted by Richard Hamilton, who had managed Ultimate Fighting Championship fighter Don Frye until a falling out and was now offering a place in UFC 10 against him. However, nothing came from it, and Coleman ended up hunting down the chance. Eventually, Kerr and Hamilton arranged for the former to train with Coleman and fight at the Brazilian event World Vale Tudo Championship 3 in January 1997. His appearance was highly anticipated, as other wrestlers like Coleman or Erikson were already known in the MMA community, though there were doubts about Kerr's true skills. Kerr himself was doubtful about it, to the point Hamilton had to force him to fight under the threat the Brazilian crowd might riot and kill him if he did not show up.

Kerr made his debut in MMA at WVC 3 against UFC veteran Paul Varelans. The bout lasted two minutes, with Kerr slamming Varelans with a takedown, mounting him and landing punches and knee strikes for the stoppage. The same happened to his next opponent, Mestre Hulk, a capoeira police teacher who had become known for besting Brazilian jiu-jitsu fighter Amaury Bitteti. After losing two teeth to Kerr's ground and pound, Hulk crawled out of the ring, getting disqualified. Kerr then reached the finals, where he was pitted against jiu-jitsu fighter Fabio Gurgel. Again, the fight would bring echoes, this time those of the bout between Erikson and Gurgel's teammate Murilo Bustamante, which happened the same year.

Kerr went to the fight with a broken hand from the Hulk fight, but he had 50 pounds over Gurgel. He took Gurgel down, passed his guard with ease and bloodied him with multiple kinds of strikes. The situation prolonged itself by 19 minutes, with the Brazilian trying armlocks and triangle chokes from the bottom, but Kerr avoided them and kept landing punishment. The fight had no time limit, but at the 30 minute mark, seeing that Gurgel was unable to defend anymore, the judges stopped the fight and gave Kerr the win.