The former UFC champion took part in the Bottle Cap Challenge, the latest craze sweeping the internet. Mayweather stopped in the Irishman in the 10th round of their fight - McGregor's debut - in Las Vegas in 2017. It was the second richest fight in history and saw Mayweather retire for a second time. McGregor meanwhile went on to fight UFC lightweight champion Khabib Nurmagomedov but lost by fourth-round submission. But in true McGregor style, he made an almost immediate U-turn and is expected to return to the Octagon later this year.

Source: Daily Mirror July 02, 2019 07:30 UTC