Federer also fashioned a come-from-behind victory, and while he never was confronted with a match point, he did drop the first two sets before getting past No. 9 Juan Martin del Potro of Argentina, 3-6, 6-7 (4), 6-2, 6-0, 6-3. After taking that big Red Bottom Heels lead, Del Potro — who upset Federer in the 2009 U.S. Open final — appeared to be hampered increasingly by a left knee that was heavily wrapped in white tape, although he refused to place any blame there afterward. “He called the Oakley Outlet trainer, but he didn’t take a timeout, so I didn’t know what they were talking about, if he got painkillers, or what happened. So I was just trying to focus on me, really, because I was in trouble. He wasn’t,” said Federer, who won his only French Open Oakley Sale title in 2009.
“Maybe his knee was [a problem]. I don’t know. But it doesn’t matter how bad that knee is. Maybe he can just sit on it and just say, ‘OK, here, take the two next Beats By Dre sets . . . and then I’ll come back in the fifth set and I will destroy you.”‘ The pivotal moment, then, was the fifth set’s opening game, a 10-minute test. Del Potro held a break point, but Federer dismissed it with a forehand winner, then held.
Del Potro called that his “chance to win,” and deemed Federer’s response there “huge.” The two riveting five-set men’s quarterfinals were quite a feast for fans after the light fare of the women’s straight-set quarterfinals. No. 21 Sara Errani of Italy entered Beats Studio Tuesday with an 0-28 record against top-10 opponents but reached her first Grand Slam semifinal by defeating No. 10 Angelique Kerber of Germany, 6-3, 7-6 (2). Errani now faces U.S. Open champion Samantha Stosur, who is seeded sixth. Stosur eliminated No. 15 Dominika Cibulkova of Slovaki, a 6-4, 6-1, taking the last six games and 13 of 14 points in one stretch.