Rafael Nadal won his third round match today at the US Open against David Nalbandian of Argentina 7-6,6-1,7-5. He had some cramping issues during his match, but that was just the prelude to what would happen after the match ended.

Take a look at what happened during his post-game press conference.

As you can tell, Nadal was in so much pain he slid all the ways down his chair. Below is an interview that took place after those events as Nadal explains what exactly happened.

Rafael Nadel next plays 28 year old Gilles Muller in the fourth round.