Djokovic, Federer escape, force semis rematch
<a href="http://api.tweetmeme.com/share?url=http://espn.go.com/tennis/french12/story/_/id/8012509/2012-french-open-novak-djokovic-roger-federer-rally-set-semifinal-rematch&service=bit.ly&source=espn"><img style="padding-left:10px;" align="right" border="0" style="border:none;" src="http://api.tweetmeme.com/imagebutton.gif?url=http://espn.go.com/tennis/french12/story/_/id/8012509/2012-french-open-novak-djokovic-roger-federer-rally-set-semifinal-rematch" height="49" width="41" /></a>Roger Federer came back from a two-set deficit for the seventh time in his career and beat Juan Martin del Potro 3-6, 6-7 (4), 6-2, 6-0, 6-3 at the French Open on Tuesday to reach his record-tying 31st Grand Slam semifinal.
