The film stars Sylvester Stallone and Robert De Niro 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.

Razor begrudgingly accepts $15,000 needed to care for his ailing former trainer Lightning Conlon and pay his overdue bills.

Cellphone footage of the fight is uploaded on YouTube and goes viral, giving Dante the idea of organizing a final grudge match between Razor and Kid, which he will promote as "Grudgement Day".

At the press conference to announce the grudge match, Razor is approached by his ex-girlfriend Sally-Rose Henderson, who cheated on him with Kid during their youth and ended up becoming pregnant.

When the grudge match begins, Kid gains the upper hand, severely beating Razor by unknowingly exploiting his blind eye.

In a post-credits scene, Razor has a new TV, on which he and Lightning view a performance by Kid on Dancing with the Stars and quickly deduce that he is having sex with his partner.

The site's critical consensus reads: "Grudge Match is sporadically funny but meandering, and its strong cast is largely mired in a plot that's overrun with cliches.

[9] Andrew Barker of Variety wrote: "Essentially recasting Grumpy Old Men with the senescent specters of Rocky Balboa and Jake LaMotta, the result is sporadically amusing, with some chucklesome sight gags and crowdpleasing supporting turns from Alan Arkin and Kevin Hart, yet it's all so overcooked that it defeats its own purpose.

"[10] Peter Travers of Rolling Stone wrote: "Watching De Niro and Stallone piss all over their most iconic roles provides no pleasure.

... Never have I yearned more passionately to climb into my time machine and journey back to before my memory of Raging Bull was needlessly trashed by this incredibly depressing and worthless mediocrity".

[13] In a 2018 chat with Interview, Kim Basinger briefly disclosed that she didn't personally enjoy her experience filming Grudge Match.

Stallone was nominated for a Golden Raspberry Award for Worst Actor for his performance in the film (along with Bullet to the Head and Escape Plan), but he lost to Jaden Smith for After Earth.