Muhammad Ali was a special guest referee at WrestleMania 1, Mike Tyson did the same thing at WrestleMania 14, and Floyd Mayweather Jr. wrestled at WrestleMania 24 against The Big Show and won the match.
Beyond an occasional appearance in the crowd at a marquee fight or walking a fighter to the ring, a wrestler hasn't transitioned to the sweet science. So don't expect someone to don the gloves in the near future, at least in the case of former six-time WWE women's champion Mickie James.
"No, absolutely not," James told DAZN. "Unless it was for charity or like which, even then, I think I might be hesitant. I get punched in the face with wrestling. I really do. I hate it. I don't like it. I don't. I think that's one of the beautiful things. I get really hot when I get really punched in the face. I appreciate what I do, and I completely respect and appreciate what boxers do, but I do not want to get punched in the face. But hey, that might make me a great boxer because I'll constantly be locked in with my cat-like reflexes."
Just because she'll never have a boxing match doesn't mean James isn't a fan of the sport.
“I'm a fan of the sport. I definitely watch," James admits. "I wouldn't say that I'm an avid boxing fan, but I certainly appreciate the sport. I also feel like with UFC and with MMA, there's it's a very like; I won't say Neanderthal-like, but it's a very aggressive. Where I feel like with boxing, there's always more rules and it's more of a gentleman's (sport). Obviously it's a fight but there's also just a little bit more rules to it in the sense. I think you have to be a little bit more cerebral and patient."