Referee Robert Byrd steps in as McGregor is taking massive punishment on the ropes! Mayweather is 50-0.

Floyd Mayweather defeated a game but tiring Conor McGregor by TKO in the 10th round Saturday night at the T-Mobile Arena in Las Vegas.

For what it’s worth, in his postfight interview, Mayweather confirmed that it was his final fight.

Developing …