Four-time champion Roger Federer beat Juan Martin del Potro 6-4, 6-3, 6-2 today to advance to the Australian Open semifinals for the ninth consecutive year.
Federer improved his career mark against Del Potro to 8-2. One of the losses came at the U.S. Open final in 2009, when Del Potro won in five sets to end Federer's 40-match winning streak at Flushing Meadows.
Del Potro didn't help himself by double-faulting on set point to hand Federer the opening set.
In the semifinals, Federer will play the winner of the later match between No. 2 Rafael Nadal and Tomas Berdych