Serena Williams joked that since the calendar still read 2012, she needed to maintain this year's dominant form.
Maria Sharapova is back in the U.S. Open quarterfinals for the first time since winning the title in 2006.
Four-time Grand Slam champion Maria Sharapova advanced to the second round of the U.S. Open with a 6-2, 6-2 win over Melinda Czink on Monday.
Serena Williams won't play mixed doubles at the Olympics, and the two U.S. teams will instead feature four doubles specialists -- the Bryan brothers, Liezel Huber and Lisa Raymond.
Venus? Lepchenko? Stephens? Yep, the American women's battle for the Olympics is reaching its climax.
Wimbledon champion Petra Kvitova won her first WTA Championships title on Sunday, beating Victoria Azarenka 7-5, 4-6, 6-3 for a victory that will also put her at No. 2 in the world rankings.
Serena Williams won her first match of the season over Australian Samantha Stosur on Sunday at the Sydney International.
Serena Williams raced into the third round at the Olympics, winning the final 10 games Tuesday to beat Samantha Stosur of Australia 6-2, 6-0 in 44 minutes.
Yan Zi and Zheng Jie became the first Chinese players to win a Grand Slam title, winning the Australian Open women's doubles final Friday.