Conventional wisdom says that Floyd Mayweather will beat Conor McGregor when they fight this upcoming Saturday (Aug. 26). After all, Mayweather's 49-0 in his pro career, and he's not the one switching sports. Still, McGregor is 11 years Mayweather's junior, and there's also a reason that the term "puncher's chance" exists. What we're saying is, think it through before contacting your bookie. You don't want to go through life without your thumbs.

In the unlikely even that McGregor were to pull off the upset, Vegas oddsmakers would stand to lose a ton of dough, with the VP of MGM Resorts race and sport saying that a McGregor victory would be the "worst loss in the history of MGM Resorts." Still, if a source that talked to Inside Las Vegas's R.J. Bell is telling the truth, Mayweather himself could go a long way towards bailing out at least one gambling operation by plopping down $5 million on himself:

Take this report with a grain of salt, because though Mayweather has never been shy about publicizing massive bets (or at least publicizing massive bets that he wins), according to ESPN, the man who calls himself "Money" has never actually bet on himself.

If this were to be the time that he starts, current Vegas odds have him at -400, so this alleged $5 million bet would net him $1.25 million in profit (which seems like it isn't worth the risk, but whatever). Guess if he goes through with this then he stands to lose even more than originally anticipated. If he wins then we'll probably learn if this is true or not. If he loses, there's a good chance we'll never know.