NEW YORK (AP) - Rafael Nadal improved to 19-0 on hard courts in 2013 by returning to the U.S. Open quarterfinals.
He will not, however, play Roger Federer next.
The second-seeded Nadal, who counts the 2010 U.S. Open among his 12 Grand Slam titles, came back to beat 22nd-seeded Philipp Kohlschreiber of Germany 6-7 (4), 6-4, 6-3, 6-1 on Monday night in the fourth round.
Their match ended about 2½ hours after Federer was upset in straight sets by 19th-seeded Tommy Robredo, Nadal's quarterfinal opponent. Had Federer won, he and Nadal would have played each other for the 32nd time - and first at Flushing Meadows.
Against Kohlschreiber, Nadal faced only one break point, and saved it. Nadal has yet to lose a service game in the tournament.
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