Floyd Mayweather vs Conor McGregor: Mayweather won!

[VGPolyglot]

Snoopy said:
Mayweather is going to bet all his money on McGregor and take a dive in the first round. He will become a billionaire by the end of today.

Wouldn't it make more sense for him to bet it all on himself? That way, he wins and he's rich.