Originally Posted by underground
Joking aside Delpo has class, that's enough for Fed to like him.
Yet you wouldn't have thought so when they played that final at the USO. Federer was unusually angry and agitated and famously let rip at the umpire accusing him of allowing Del Potro to take too long to challenge calls! For a while afterwards, Federer complained that he should have won and implied that it was his own mistakes that caused him to lose it rather than Del Potro's superior play. He clearly doesn't like losing in Slam finals except to Nadal where he has had to accept him as an equal given the number of losses to him he has had to sustain at the FO!
Maybe he is mellowing with age in being more generous in his current praise of Del Potro!