Despite Ali vs. Inoki comparisons, there’s no true precedent for Floyd Mayweather vs. Conor McGregor

Mixed matches with boxers against wrestlers or MMA fighters have happened numerous occasions, and in almost every case, the rules basically predetermined the outcome The fact that Conor McGregor vs. Floyd Mayweather are even fighting, let alone that this will likely end up being either the first or second biggest grossing event in the history of combat sports, is a testament to the change in the economics and in the media.
Fights similar to this have been talked about since the beginning of time