USA rugby sevens speedster Carlin Isles has proven over the past few years that electric pace is just as exciting on the field as it is the track. But how does he stack up against Usain Bolt?
A study led by HSBC Rugby has found that Isles has a superior power-to-weight ratio than 100m-200m record holder Bolt and a higher top speed over 20 metres.
His 40 metre time is also better than any player in the NFL.
Isles holds a personal best of 10.13, which could have seen him qualify for the semi-finals of the London Olympics.
But Isles has chosen to represent Team USA on the sevens circuit and has been making a name for himself in the past few seasons.