Cotto vs. Trout

Russian inmate Boyka, now severely hobbled by the knee injury suffered at the end of Undisputed 2. No longer the feared prison fighter he was, he has declined so far that he is now good only for cleaning toilets. But when a new prison fight tournament begins - an international affair, matching the best fighters from prisons around the globe, enticing them with the promise of freedom for the winner - Boyka must reclaim his dignity and fight for his position in the tournament.

Following Rocky Balboa's intense battle with his most powerful adversary yet – the ferocious Clubber Lang – Rocky joins forces with former rival Apollo Creed in an effort to get back his fighting spirit.

The youngest son of an alcoholic former boxer returns home, where he's trained by his father for competition in a mixed martial arts tournament – a path that puts the fighter on a collision course with his estranged, older brother.

After suffering a brutal defeat and being told he can no longer fight, 37-year-old, scar-ridden prizefighter Louis 'Mountain' Rivera struggles to find a new direction in life.