Boxer Floyd Mayweather and UFC fighter Conor McGregor are set to begin a global Read more on 5 live Boxing podcast - Pacquiao robbed or past it?. Live: Jeff Horn vs Manny Pacquiao. “I thought in those opening couple of rounds that I was out- boxing him in the first half of that fight. “He did. Boxing legend Floyd Mayweather returns to the ring to fight UFC superstar Conor McGregor in a round showdown at the T-Mobile Arena in Las Vegas.