World No. 1 Roger Federer has won his 38th straight match at the U.S. Open, moving into the quarterfinals with a victory over No. 14 Tommy Robredo.

Federer, in search of his sixth straight title at Flushing Meadows, split the first 10 games against his Spanish opponent Monday, then won 14 of the net 18 for a 7-5, 6-2, 6-2 victory. He was off the court in 1 hour, 48 minutes.

His net match will come against No. 12 Robin Soderling, whom he beat in straight sets earlier this year in the French Open final to complete his career Grand Slam.

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