MELBOURNE, Australia — Fourth-seeded Angieszka Radwanska won her 12th match in a row with a 6-3, 6-1 victory over Britain's Heather Watson in the third round today at the Australian Open.
Radwanska won tournaments in Auckland and Sydney — nine matches in a row — before coming to Melbourne Park. Her 6-0, 6-0 win over Dominika Cibulkova in the Sydney International final was the first "double bagel" in a WTA final since November 2006.
The Polish player, who received treatment for what appeared to be a blister on the small finger of her right hand in the second set, faces 2008 French Open champion Ana Ivanovic, who beat Jelena Jankovic 7-5, 6-3.
"I'm extremely happy to be playing my best tennis from the beginning of the year," Radwanska said. "Hopefully I'll play on the same level the rest of the tournament."
Meanwhile, fifth-seeded Angelique Kerber survived some nervous moments before fending off American teenager Madison Keys in the third round, then she blew out the candles on a cake to celebrate her 25th birthday.
Kerber won 6-2, 7-5 to move into the fourth round, further than she has ever gone in six trips to the Australian Open. She next plays No. 19 Ekaterina Makarova, who advanced after a 6-7 (4-7), 6-3, 6-4 win over Marion Bartoli.
"Madison is a great young player, and it was very tough," Kerber said. "So happy I won on my birthday!"
Keys, 17, was playing in the main draw for only the second time at the Australia Open.
Sixth-seeded Li Na advanced 6-4, 6-1 over Sorana Cirstea to face No. 18 Julia Goerges, who beat Zheng Jie 6-3, 1-6, 7-5 .
Late Thursday, Roger Federer beat Nikolay Davydenko 6-3, 6-4, 6-4 to set up a men's third-round match against Bernard Tomic, the last remaining Australian in the men's or women's draws.
Tomic, 20, beat qualifier Daniel Brands 6-7 (4-7), 7-5, 7-6 (7-3), 7-6 (10-8) on a searing day in which temperatures hit 106 degrees.
Federer praised Tomic's play for the crowd and later said he won't mind for whom or how loud fans are cheering today.
"I don't think it matters whether he's the last Australian or 10 more," Federer said. "There's always excitement about Aussies playing here. I played him here last year. The crowd was great. I expect something similar. If it's not, if it's totally for him, that's fine, too."