Former heavyweight champion Mike Tyson was on "The Tonight Show" on Tuesday. So of course Jimmy Fallon got the boxer-turned-actor to play a Nintendo classic: "Mike Tyson's Punch-Out!!" 

"I always thought it would just be an amazing thing if you played 'Mike Tyson's Punch-Out!!' and tried to fight yourself," Fallon says. 

The game is notoriously hard as you go up the ranks. Even Tyson knows how hard the game can be; he's played it before. 

"I would be killed, man," Tyson says. "He beats everybody ... I've only met one little kid around 10 years old who said he beat me." 

It doesn't take much persuasion, however, and soon Tyson is standing in front of a giant screen, facing off against himself. 

Unfortunately, the match doesn't last long, and, like so many before, Little Mac is knocked out in a TKO. 

Watch the whole fight in the video below:

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