A ball boy at the US Open tennis tournament lost his footing and fell on the court after picking up a loose ball during Thursday's second round match between No. 1 seed Roger Federer and Germany's Bjorn Phau.
No one ever said being a ball boy was easy, as thousands of people in the stands (and possibly millions of others on television worldwide) will see it if you slip up like this, but this guy seemed to take it all in stride.
Video via. H/T Sportress.