Check out the below short documentary from director Mario Diaz ("The Clemente Effect"), produced for ESPN’s Grantland, on Carlin Isles, the American rugby union and rugby sevens player who is currently under contract with the USA sevens team, and is considered the fastest rugby player in the world!

He runs a 4.2 40-yard dash.

You can read Grantland’s full profile of Isles here.

Watch the short documentary on him below: