US Open, Flushing Meadows
Dates: 30 August - 12 September Start time: 1600 BST
Coverage: Live text commentary on BBC Sport website and mobiles; updates on BBC Radio 5 live; live on Sky Sports
Fourth seed Jelena Jankovic crashed out of the US Open at the third-round stage after defeat to Estonia's Kaia Kanepi.
Serbian Jankovic, 25, struggled from the start in strong winds in New York and Kanepi continued her impressive recent run with a 6-2 7-6 (7-1) win.
Top seed Caroline Wozniacki of Denmark had no such problems, easing through 6-0 6-1 against Taiwan's Chan Yung-Jan.
She faces 2006 champion Maria Sharapova in the fourth round after the Russian's 6-0 6-0 demolition of Beatrice Capra.
But Jankovic's search for a maiden Grand Slam title continues to elude her and she never looked likely to progress in the difficult conditions.
Kanepi eased through the first set as Jankovic failed to find any rhythm and the 31st seed took total control.
Jankovic won three successive games to take the second set to a tie-break, but Kanepi proved far too strong.
"I had a hard time serving in the wind - the ball was going all over the place," said Jankovic.
"But my opponent dealt with it better than I did and she deserves to go through.
The 25-year-old Kanepi, who reached the quarter-finals of Wimbledon in the summer, will now play the winner of Patty Schnyder against Yanina Wickmayer for a place in the quarters.
Wozniacki, a US Open finalist in 2009, was delighted with her afternoon's work at Louis Armstrong Stadium.
"It was tough for both of us as it was pretty windy, but I kind of thought it was fun. It was a little bit different," said the 20-year-old.
"Maria is a good player, a tough match up. But I will take today and tomorrow off and we will see what happens on Monday."
Number 14 seed Sharapova knows she will have to play her best to stand any chance against the top seed.
"She's playing probably the best tennis of her career," said Sharapova. "She was a finalist here last year so she is very familiar with this court. It'll be tough but I'm looking forward to it."
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