Floyd Mayweather Jr. vs. Conor McGregor, billed and promoted as The Money Fight, Boxing vs. MMA: Champion of Champions and The Biggest Fight in Combat Sports History, was a professional crossover boxing superfight between undefeated eleven-time five-division boxing world champion Floyd Mayweather Jr. and two-division mixed martial arts world champion and, at the time, UFC World Lightweight Champion and Undisputed World Featherweight Champion Conor McGregor.
