Serena cruises into third round

Serena Williams gestures after winning her match against Michaella Kajicek at the U.S. Open in New...

Serena Williams gestures after winning her match against Michaella Kajicek at the U.S. Open in New York on Thursday, Sept. 1, 2011. (REUTERS/Jessica Rinaldi)

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, Last Updated: 11:53 PM ET

NEW YORK - Three-time champion Serena Williams and No. 1 seed Caroline Wozniacki were lopsided second-round winners Thursday at the U.S. Open.

Williams, the former world No. 1 who is seeded 28th, flattened Michaella Krajicek of the Netherlands 6-0, 6-1 in a mere 49 minutes at Arthur Ashe Stadium, closing out the uneventful affair with her 10th ace on a breezy afternoon in Flushing.

Wozniacki, meanwhile, needed only 63 minutes to knock off Dutchwoman Arantxa Rus, who won two breaks in the first set but never held serve in a 6-2, 6-0 defeat.

A runner-up two years ago, Wozniacki is still seeking her first Grand Slam title. The 21-year-old Dane moved on to face American Vania King, an easy 6-2, 6-0 winner Thursday over Australia's Jarmila Gajdosova.

Williams, 29, is 14-0 since Wimbledon -- all on hardcourts, including a pair of titles. She was playing a day after her sister, Venus, pulled out of the championship and disclosed she was suffering from an autoimmune disorder.

"Honestly, I just hope to keep my errors down and keep making my shots, and hopefully I will be able to win five more matches," said Serena, a 13-time Grand Slam champion. "If not, I'm still happy to be here."

Williams advanced to face fourth-seeded Victoria Azarenka of Belarus, who beat Argentina's Gisela Dulko 6-4, 6-3.

By beating Krajicek, who is the half-sister of former men's Wimbledon champion Richard Krajicek, Williams moved to 20-1 lifetime against non top-50 players.

Seventh-seeded gritty Italian Francesca Schiavone rolled into the third round with a 53-minute 6-1, 6-1 pasting of Croat Mirjana Lucic, while 10th-seeded rising German Andrea Petkovic overcame diminutive Chinese Zheng Jie 3-6, 6-3, 6-3. The 31-year-old Schiavone was this year's French Open runner-up and last year's French Open champ.

Up next for Schiavone will be South African Chanelle Scheepers.

Former U.S. Open runner-up Jelena Jankovic advanced on Day 4 of the fortnight with a 6-3, 6-4 handling of former top-10 player Jelena Dokic of Australia. The former world No. 1 Jankovic, of Serbia, was the 2008 U.S. Open runner-up to Williams.

Jankovic has been nursing a sore back.

"I have a day off tomorrow, and, you know, I will just try to receive some treatment and feel the, you know, the best as possible for my next match," Jankovic said. "I think I will be okay."

Former U.S. Open champ Svetlana Kuznetsova was an easy 6-4, 6-3 winner against Britain's Elena Baltacha 6-4, 6-3. The 15th-seeded former top-five Russian star Kuznetsova is a two-time Grand Slam champion, including a U.S. Open championship back in 2004. She also reached the final in 2007.

Another former No. 1 from Serbia, Ana Ivanovic, moved on without even lifting her racquet on Thursday.

The 16th seed received a walkover into the third round when last week's New Haven runner-up, Petra Cetkovska of the Czech Republic, pulled out of their scheduled encounter due to a quadriceps injury. Ivanovic, who is a former French Open champ and Aussie Open runner-up, will get Sloane Stephens in the second round after the American beat 23rd-seeded Shahar Peer of Israel 6-1, 7-6 (7-4).

Meanwhile, 17th-seeded Russian Anastasia Pavlyuchenkova held off Croat Petra Martic 6-4, 2-6, 6-4, 18th-seeded Italian Roberta Vinci vaulted past France's Alize Cornet 6-2, 6-3, and little-known Spaniard Silvia Soler-Espinosa dismissed 31st seed Kaia Kanepi of Estonia 6-4, 6-2 on the grounds at the USTA Billie Jean King National Tennis Center. Pavlyuchenkova should have her hands full with Jankovic in her next outing.

In battles featuring non-seeds, Scheepers handled German Mona Barthel 6-4, 7-5, Spain's Carla Suarez Navarro bested Romanian Simona Halep 3-6, 6-2, 6-2, and Uzbekistan's Akgul Amanmuradova defeated France's Pauline Parmentier 6-3, 7-5. The 19-year-old Halep stunned French Open champion and Aussie Open runner-up Li Na in her opening match this week.


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