He had been indicating there was a problem since the very first game. The replay it showed of him bending over was from the very first game of the match, so I'm reluctant to compare him to Djokovic or, worse, Tipsarevic.
Ahh, hadn't seen that. Thought it suddenly appeared in the first game of the second set. Fair enough - he does seem prone to illness!
Wasn't particularly offended by Tipsarevic before this match, but those shades are starting to look like the attire of someone who thinks they're just a bit too cool. His wife is fit though.