in the semi-final, Djokovic definitely challenged Nadal a lot more than Federer did in the Final. i think if Djokovic was in the semi against Federer, i think Djokovic could have beaten him. it might've went 5 sets, too. it would've been the best match to watch, since everyone already knew Nadal was gonna win the whole thing anyway. hopefully, next year the draw will be setup so that Fed and Djokovic could meet in the semis. the Battle for Runner-up Match.