If the rumored Conor McGregor vs. Floyd Mayweather mega-fight does actually happen, as reports suggest it will, there will be plenty of time to speculate, analyze and debate which champion is going to come out on top.

Of course, since the fight will be taking place in a boxing ring where Floyd Mayweather is undefeated, the retired 40-year old has a major advantage despite the fact that he's 40...and has been retired for over a year.

Although, given Mayweather's style of boxing it wouldn't be surprising if the fight lasted at least a few rounds, right? Not according to Sugar Ray Leonard.

TMZ recently caught up with Sugar Ray who says that McGregor won't be able to last more than one round in the ring with Money Mayweather.

Check out the clip and let us know what you think of McGregor's chances against Mayweather.