Grudge Match is a 2013 sports comedy film starring Robert De Niro and Sylvester Stallone as aging boxers stepping into the ring for one last bout. Stallone and De Niro have both previously been in successful boxing films (Rocky and Raging Bull, respectively) and worked together in Cop Land. The film is directed by Peter Segal. The film was released on December 25, 2013.

Boxers Henry “Razor” Sharp (Sylvester Stallone) and Billy “The Kid” McDonnen (Robert De Niro) become rivals after two fights, one in which Kid beats Razor and one in which Razor beats Kid. Before they have a rematch, Razor announces his retirement, ruining both of their careers. Years later, Razor is working in a shipyard when he’s visited by promoter Dante Slate Jr. (Kevin Hart), who wants Razor to provide a motion capture performance for a video game. Razor begrudingly accepts $15,000 needed to renovate his house. At the recording studio, he is surprised by Kid, who was also invited by Slate, and the two get into a fight, damaging the studio’s equipment before being arrested. Cellphone footage of the fight is uploaded on YouTube and goes viral, giving Slate the idea of organizing a final fight between Razor and Kid, which he calls a ‘Grudge Match’.

Kid accepts Slate’s offer, and Razor is forced to do so as well. At the press conference to announce the Grudge Match, Razor is approached by his ex-girlfriend Sally Rose (Kim Basinger), who cheated on him with Kid during their youth and ended up becoming pregnant. She wants to reconnect with Razor, but he is reluctant. Razor later recruits his old trainer, Louis “Lightning” Conlon (Alan Arkin), to get him back in shape, while Kid is approached by his son, B.J. (Jon Bernthal), against Sally’s wishes. After initially dismissing him, the two begin to bond after B.J. gives Kid helpful advice regarding his technique, and is invited to be his trainer.

But who will win the Grudge Match?

Summary via Wikipedia.