Brock Lesnar, a former undisputed UFC heavyweight champion, has firmly closed the door on a return to professional mixed martial arts in the future, claiming that the sport is a “young man’s” as he continues his run in professional wrestling.

Lesnar, a native of South Dakota competed as a professional mixed martial artist on nine separate occasions – eight of which came under the banner of the UFC.

The former undisputed champion most recently made the walk in a surprise return to the sport at UFC 200 in July 2016, battling to an eventual official ‘No Contest’ against promotional alum, Mark Hunt. 

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Following the bout, which was originally awarded to Lesnar courtesy of a unanimous decision win, the former titleholder tested positive for the banned substance, clomiphene, resulting in a suspension from anti-doping agency, USADA and a fine from the Nevada State Athletic Commission.

Prior to his ‘No Contest’ against Mark Hunt, Brock Lesnar ended his first UFC stint with a defeat against Alistair Overeem

Ending his career with a 5-3(1) professional record, Lesnar was briefly linked with a return to the Octagon in a heavyweight title offing against former two-weight champion, Daniel Cormier back in 2018, however, a bout failed to ever materialize. 

Lesnar was also subject of a notable call out from former two-time light heavyweight champion, Jon Jones ahead of a potential heavyweight division move, however, a bout also failed to hit paper – as did a move to Bellator to fight sport icon, Fedor Emelianenko. 

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Ahead of his headlining appearance at Wrestlemania 38 in April, Lesnar confirmed during an interview with The New York Post that he would not be making a return to professional mixed martial arts in the future, claiming that his age would not permit a comeback.

“That door is closed,” Brock Lesnar said of a return to mixed martial arts. “You know what, Dana White, the Fertitta brothers (Frank and Lorenzo) were exceptional to me. I’m too old. That’s a young man’s sport, and that door is closed. I’m Brock Lesnar, the WWE Superstar.” 

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Making his professional mixed martial arts debut back in June 2007 with a victory over Min-Soo Kim, Lesnar then debuted in the UFC with a kneebar loss to Frank Mir, before embarking on a four-fight winning run, lodging wins over Heath Herring, and then-champion, Randy Couture – before stopping both Mir, and then-interim champion, Shane Carwin to defend his heavyweight title and unify the championships, respectively.