Mayweather is heavily favored in this fight because it is a boxing match. If the fight was in the Octagon, McGregor would whip Mayweather's ass. So maybe if a rematch is planned, McGregor would lose this fight and the rematch would be in the Octagon. Why only have one fight when the promoters can squeeze out a cash cow as big as this more than once?

I do hope it's an entertaining fight without an anti-climactic ending like McGregor getting frustrated and finally kicks Mayweather and he loses by disqualification.