Djokovic can still make it if he wins in two sets against fellow Serbian Janko Tipsarevic -- who is standing in for the injured Andy Murray -- and Berdych loses a set.
In no time, though, Simon had won the next two sets and put one of Federer's longest-standing records in jeopardy: Before the match, he had reached at least the quarterfinals at 35 consecutive major events.