Why do people automaticaly assume this? Its simply a coincidence. As JBF pointed out, federer could not have known the exact scenario plus im sure his pride meant more. Even if he did somehow know, dont you think he would rather face murray anyway? When Fed's A game is on, he is most likely going to beat murray whereas the same cannot be said against Del Potro. Federer couldnt break DP tonight and was outpowered from the basline. He is the defending US Champion and when his game is on, i think hes unbeatable. He started of nervous against murray but hes found his stride now and is only going to get better for the rest of the tournament. DP is definately a bigger threat to Fed than Murray is.