Wozniacki wallops Sharapova at US Open

NEW YORK (AP) - Three-time major champion Maria Sharapova lost to top-seeded Caroline Wozniacki 6-3, 6-4 Monday in the fourth round of the U.S. Open.

Sharapova, who won the 2006 title at Flushing Meadows, hurt herself with nine double-faults and a total of 36 unforced errors - 26 more than 2009 U.S. Open runner-up Wozniacki.

The other quarterfinal on that side of the draw will be No. 31 Kaia Kanepi of Estonia against No. 7 Vera Zvonareva, who overwhelmed 38th-ranked Andrea Petkovic of Germany 6-1, 6-2. Zvonareva, the runner-up at Wimbledon in July, reached the U.S. Open quarterfinals for the first time.

Earlier, Kanepi did the same by coming back to defeat 2009 U.S. Open semifinalist Yanina Wickmayer of Belgium 0-6, 7-6 (2), 6-1.

Third-seeded Novak Djokovic beat No. 19 Mardy Fish 6-3, 6-4, 6-1 and No. 17 Gael Monfils was a 6-4, 7-5, 7-5 winner over Richard Gasquet in an all-French matchup.

Roger Federer reached the quarterfinals at a 26th major in a row by beating No. 13 Jurgen Melzer of Austria 6-3, 7-6 (4), 6-3.