Floyd Mayweather shows off his unbelievable speed in the gym
Last Updated: 31/08/15 11:55am
Floyd Mayweather is showing no signs of slowing down ahead of his 49th professional fight.
The American superstar will attempt to extend his perfect record against Andre Berto on September 12, but first hit the gym to demonstrate his blinding hand speed, via his own Instagram account.
Can you punch the speed bag this quickly? Watch this video to check out Mayweather in action.