Roger Federer, Novak Djokovic on to a fifth set

 Federer, as he did after winning the first set, seemed to give a little less effort after an early break in the fourth set and coasted. Novak Djokovic was happy to seize control, and now we're at two sets apiece -- 7-5, 1-6, 7-5, 2-6 -- with a fifth set on tap.

The odd rhythm of the match doesn't seem to favor either player. We'll see if Federer can get his interest level back up for the last set of this semifinal.