"It's difficult when you play against someone who is walking on the court like he is not well or is injured," Haas said. "I find no one does this better than Andy Murray, from time to time. Sometimes he looks like he can barely move, then comes the trainer and then he moves like a cat. I believe everyone knows this now. People talk about it in the locker room.
"Maybe he would like to take some pressure off himself. He tells himself, maybe I have a niggle or a problem, I am not feeling too well, but I'm going to try it anyway. But he is such a talented player that he really doesn't need [to do] this."