Oh boooooooy this isn't Simon's day.
Firstly, Federer's withdrawal, sending Blake into the SF. Should Tsonga beat Roddick later (and we know that is very possible), as pachouille says, the game is over for him.
Secondly, Dave is still hanging around, having beaten Muzza in the QF. He still needs to win the title if he is to keep his chances alive, but I can't see why he wouldn't believe he could beat any player left in the draw.
Time for Del Potro also to start biting his fingernails...if Nalbandian beats Blake in the final, he is also out.