According to UFC president Dana White, a shower of excuses will rain down from the doubters when Conor McGregor knocks out Floyd Mayweather on Saturday night.

The two fighters will collide in a boxing ring, at the T-Mobile Arena in Las Vegas.

McGregor has no professional boxing experience. He is a tremendous underdog in the contest, despite Mayweather being 40 years old and returning from two years of inactivity.

The boxing community expect Mayweather to dominate the action and defeat McGregor with very few issues. Mayweather is predicting a knockout victory and plans to take the fight to McGregor instead of being defensive. 

Many boxing experts are even seriously doubting that McGregor will be able to land a single punch.

White expects an earthquake within the boxing community when McGregor pulls off the shocker.

“The thing about shocking the boxing world is that the boxing world is saying dumb stuff like, ‘This guy doesn’t even belong in there and he doesn’t have any chance.' A guy who hits as hard as Conor McGregor absolutely has a chance. And when he knocks Floyd Mayweather out on Saturday, they’re all going to say, ‘Floyd was too old and this and that.’ They’ll have a whole different set of excuses,” White said.

"This is under boxing rules, but you better believe this is going to be a fight. This isn’t going to be a boxing match, this is going to be a fight. When you’re in boxing, you throw a jab, a right hand or a hook or a hook to the body comes behind it. None of that stuff is going to be coming. Floyd is the master of knowing what comes next and he’s the best defensive fighter. Those aren’t the same patterns that are going to come from Conor McGregor. It’s going to be completely different.

“Conor doesn’t just have to hit him on the chin. He’s going to hit him on the elbows, he’s going to hit him on the shoulders, he’s going to hit him all over his arms, the side of the head, the side of his gloves. He’s on 29-year-old legs. Floyd’s on almost 41-year-old legs, and anybody who’s been 41 knows what that’s like. Conor is the bigger, stronger man who will apply pressure, hit him with hard punches, he will eventually catch him and he will knock him out.”