Originally Posted by BreakPoint
And how about the fact that Federer was playing with a back injury? His back was feeling so tight that he put on a compression undershirt under his polo shirt midway through the match to keep his back warm.
He put it on during the Tomic match as well, whenever the temperature gets below 70F. It's precautionary, it doesn't mean he's suffering back pain. In fact looking at his average 1st serve speed I'd say he's just fine.