LAS VEGAS, United States (AFP) –Floyd Mayweather insisted he would head into a permanent retirement after sealing his place in boxing history with a 50th straight win against Conor McGregor on Saturday. The 40-year-old American star outclassed McGregor over 10 absorbing rounds at the T-Mobile Arena to defeat Irish mixed martial arts star McGregor by technical knockout. The win sees Mayweather, who had come out of a two-year retirement to face McGregor, surpass heavyweight legend […]