Hartt writes:
Although he probably won't acknowledge it, it was clear Fed was having a physical problem in that match. It showed up when he was serving at 2-2 in the 2nd set. Suddenly his service motion was strange, the speed was way down, and he did not even get into a crouching position when receiving, but stood straight up. Everything points to back pain. (NP) And there are many things wrong with that beard - it makes him look older, slightly villainous, and also his nose appears even bigger than it actually is!