Nearly a decade after their record setting boxing match, conor mcgregor has once again brought floyd mayweather into the conversation. · conor mcgregor was floyd mayweather jr. ’s last opponent as a professional. Ufc president dana white said he reached a deal with mcgregor , mma’s biggest star and lightweight champion, and will now start negotiations on a mega fight with the retired mayweather that could be one of the best selling fights in history. This time, the setting is different. · conor mcgregor challenges floyd mayweather to an mma rematch on the historic white house card, citing their 2017 bout and claiming hed win in seconds. In the historic bout in 2017, mayweather improved his record to 50-0 by stopping the irishman via tko in the 10th round. · in 2017, mcgregor and mayweather faced off in one of the biggest boxing events of all time, dubbed “the money fight,” with mayweather stopping mcgregor in the 10th round. · conor mcgregor has challenged floyd mayweather jr. To a rematch under ufc rules, hinting at a potential fight at the white house. · conor mcgregor has reportedly signed the contract for the much-anticipated mega- fight between himself and boxing legend floyd mayweather , according to the sun.