<Tr> <Td_colspan="2"> Mayweather defeats McGregor in 10th round by TKO </Td> </Tr> <P> Floyd Mayweather Jr. vs. Conor McGregor, also known as "The Money Fight" and "The Biggest Fight in Combat Sports History", was a professional boxing match between undefeated eleven - time five - division boxing world champion Floyd Mayweather Jr. and two - division mixed martial arts (MMA) world champion and, at the time, UFC Lightweight Champion Conor McGregor . The fight took place at the T - Mobile Arena in Paradise, Nevada, on August 26, 2017 at the light - middleweight weight class (154 lbs; 69.9 kg). It was scheduled for twelve rounds and recorded the second highest pay - per - view buy rate in history . </P> <P> Mayweather extended his professional boxing undefeated streak to 50 victories and 0 defeats (50--0), surpassing the 49--0 record of Hall of Famer Rocky Marciano, after defeating McGregor by technical knockout (TKO) in the 10th round . Mayweather's guaranteed disclosed paycheck was $100 million and McGregor's guaranteed disclosed paycheck was $30 million . However, the purse for the two fighters was expected to be substantially higher for each, with Mayweather reportedly earning over $300 million from the fight and McGregor earning over $100 million . </P> <P> During his successful UFC mixed martial arts career McGregor maintained an interest in boxing and entertained the idea of a "money fight" with Mayweather . Mayweather reportedly talked to Freddie Roach to train McGregor for the fight in case it would happen . UFC president Dana White dismissed the rumors of a fight with Mayweather on The Dan Patrick Show, stating that Mayweather would have to contact him since McGregor was under contract with the UFC . White even went as far as stating, "Here's what I think the chances are (of the fight happening): About the same of me being the backup quarterback for Brady on Sunday," referring to Super Bowl LI . In January 2017, it was reported that the two parties had entered an "exploratory phase" in negotiating a potential match between Mayweather and McGregor . On The Herd with Colin Cowherd, White openly offered to pay Mayweather $25 million to hold the proposed bout during a UFC event . He also predicted that pay - per - view viewership of the hypothetical bout could possibly rival Mayweather vs. Pacquiao . </P>

Who won the fight conor mcgregor or floyd mayweather