Radwanska, Kerber roll at the Australian Open

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Agnieszka Radwanska and Angelique Kerber were both easy second-round winners Wednesday at the Australian Open.

The fourth-seeded Radwanska of Poland converted on 6-of-12 break chances and capitalized on 38 unforced errors by Romania's Irina-Camelia Begu during a 6-3, 6-3 victory at Rod Laver Arena.

Radwanska, who has now won 11 straight matches and 22 consecutive sets, is seeking her third title in as many events this season.

Germany's Kerber, the tournament's fifth seed, overcame three double faults by holding Lucie Hradecka of the Czech Republic to just 2-for-7 on break opportunities en route to a 6-3, 6-1 win in a little over an hour.

Hradecka also recorded three double faults and made 39 unforced errors while failing to advance past the second round at this event for the second straight year.

Second-seeded French Open champion and former world No. 1 Maria Sharapova of Russia had an easier time breezing past Japan's Misaki Doi, becoming the first woman to win consecutive 6-0, 6-0 victories at a Grand Slam event since Wendy Turnbull did it at the Australian Open in 1985.

China's sixth seed Li Na also earned a straight-set victory to advance past the second round with a 6-2, 7-5 decision over Belarus' Olga Govortsova. The former French Open champion and Aussie finalist rallied from a 5-2 deficit in the second set to move on, reeling off a pair of aces in the decisive set.

Other winners on Day 3 included 11th-seeded Marion Bartoli of France's 7-5, 6-0 victory over Serbian Vesna Dolonc, 18th-seeded Serbian Ana Ivanovic's 7-5, 1-6, 6-4 decision over Chinese Taipei's Yung-Jan Chan, German Julia Goerges, who cruised past Switzerland's Romina Oprandi 6-3, 6-2, and a 6-3, 6-3 win by 19th-seeded Russian Ekaterina Makarova over France's Stephanie Foretz Gacon.

Serbia's Jelena Jankovic, the 22nd seed, earned a hard-fought 2-6, 7-6 (7-5), 6-2 decision over Portugal's Maria Joao Koehler, and 27th-seeded Czech Sorana Cirstea also advanced to the third round with a 1-6, 6-3, 6-2 win over Romania's Sorana Cirstea.

A top-10 seed was ousted Wednesday when ninth-seeded former U.S. Open champion and heavy Aussie crowd favorite Sam Stosur was outlasted by China's Zheng Jie 4-6, 6-1, 7-5.

There were a few more upsets on the day as Slovakia's Dominika Cibulkova, the 15th seed, was upended by Russian Valeria Savinykh in a hard-fought 7-6 (8-6), 6-4 match; 23rd-seeded Czech Klara Zakopalova dropped a 6-1, 6-0 decision to Belgium's Kirsten Flipkens; and American Madison Keys powered past 30th-seeded Austrian Tamira Paszek 6-2, 6-1 with the aid of six aces.

Savinykh moved on to the third round with the help of seven double faults and 57 unforced errors by Cibulkova, while Flipkens converted on 6-of-12 break opportunities and took advantage of a pair of double faults by Zakopalova to advance past the second round of the Aussie Open for the first time in five appearances.

Savinykh is playing in her second Australian Open after failing to move out of the first round in 2012.

In unseeded action, Britain's Heather Watson moved past Kazakhstan's Ksenia Pervak 4-6, 7-6 (9-7), 6-2.