Read more about Yuri Boyka at: Wikipedia

Official Site: New Line Cinema

Undisputed II: Last Man Standing is a 2006 direct-to-video sequel to the 2002 action film Undisputed. The film stars Michael Jai White, Scott Adkins, Eli Danker and Ben Cross, and was directed by Isaac Florentine. This film doesn't feature any of the cast members of the first film, which included Wesley Snipes and Ving Rhames.

Visiting the Russian Federation for a series of boxing matches, George "Iceman" Chambers is subsequently framed for possession of cocaine and sent to prison. There, he discovers a series of illegal full-contact Mixed Martial Arts matches dominated by inmate Yuri Boyka. The prison officials arrange these fights and place large side-bets to make a personal profit, often at the expense of the fighters.

Once inside, the warden and legal adviser for Chambers state that if he fights Yuri in the ring, he will likely get an expedited appeal and early release. He initially refuses, but after spending time in demeaning physical labor in the prison's sewer system and experiencing firsthand the brutality of the guards, he reluctantly agrees. He is rescued from both forms of humiliation by a crippled inmate, Crot (Eli Danker). Both fighters train hard for the match, though Chambers still relies on his boxing background while Boyka prepares a series of deadly kicks, throws, and grappling combinations designed to humiliate his opponent in the ring. Prior to the fight however, Boyka's friends force George's cellmate, Steven, who is acting as his cornerman, to spike his water with a light sedative during the fight.

During the fight, Chambers is somewhat taken by surprise at the flurry and variety of Boyka's attacks, but manages to hold his own through the first round by keeping his distance, staying calm, and dealing out painful punching combinations whenever possible. At the end of the first round, Steven slips the drugged water into Chambers' mouth and he takes a few sips. During the second round, he starts to lose his focus and begins taking more and more punishment until Boyka knocks him out with a devastating flying kick. Following the fight, Steven kills himself out of guilt.

Yuri Boyka has not been a contender in any CBUB matches.