Fans of Rafael Nadal had to be cringing when word came down that Rafa had collapsed in his chair due to cramps during his post-match press conference.
The press conference followed Nadal's tough third-round match against his good friend, David Nalbandian. He advanced in straight sets over Nalbandian, but it was by no means an easy match.
Nalbandian was up a service break in the first set. Nadal fought back and won the set, but not before they went to a tiebreaker. In total, the match was just about three hours long.
That tough match and the fact that Sunday is probably the most humid day of the US Open so far, made for a situation conducive to cramping.
The video is tough to watch. Nadal stops in his tracks and is unable to even engage the media in attendance. He slumps to the floor, as it was the only comfortable spot he could manage to find.
Thankfully, Nadal was back on his feet talking and laughing rather quickly. He said that it was nothing more than a cramp and it was nothing that he had not encountered before.
No matter how minor, you have to be concerned as Nadal moves on to to his Round of 16 match against Gilles Muller.
Nadal admitted that he wasn't able to prepare for this tournament in the way he usually prefers to. As the tournament rolls on, we are more likely to see things come apart for him thanks to his preparation being thrown off.
It won't help that Muller is a tough opponent. He played Rafa at Wimbledon and his game is one that is based on hitting big winners. That's not going to be easy on Rafa if he is having any trouble getting around.
I wouldn't expect Nadal to be showing any ill effects in his next match, but that doesn't mean the coast is clear.