I worry about this loss for nadal. The other two hard losses he took a considerable amount of time off.
Soderling loss - a few months off
Rosol loss - 7+ months off
Darcis loss - ?????
If he takes a lot of time off again there will be a pattern. Is his knee injury partially mental, if he wins it feels good, hard losses the knee really hurts after?
Ps: His other other hard loss was Australian open when he had a chance to hold all 4 slams at once, it was against Ferrer. But he was really hobbling during the match, he was clearly injured. He didn't play Indian wells or Miami that year. In the Soderling, Rosol, and Darcis matches he wasn't hobbling.