Venus wins again in Key Biscayne

American Venus Williams rallied Sunday for another win at the at the Sony Ericsson Open, her first tournament since last year's U.S. Open.

Williams survived a match point at 5-4 in the third set to beat Aleksandra Wozniak of Canada 4-6, 6-4, 7-6 (7-5) in a third round match lasting nearly three hours.

Sidelined for sixth months because of Sjogren's syndrome -- an auto-immune disease that causes fatigue and joint pain -- Williams made the field as a wild card at a tournament she's won three times.

She dropped only three games to beat Kimiko Date-Krumm in her return Wednesday and knocked off reigning Wimbledon champion and world No. 3 Petra Kvitova in three sets on Friday.

Williams had no idea she was down match point -- "Thank God I'm oblivious to the score a lot of the time" -- and said she has one goal that keeps her motivated in tough spots: the upcoming London Olympics.

"I kept thinking about the Olympics and how I need my points," she said. "When things look bleak, I think about the Olympics."

Sunday's final third-round match at the $4.828 million tournament is being played between top-seeded Victoria Azarenka and Heather Watson.

Earlier, fifth-seeded Agnieszka Radwanska eased past Silvia Soler-Espinosa 6-1, 6-2 and seventh-seeded Marion Bartoli edged Simona Halep 6-4, 7-6 (8-6).

Also, No. 15 seed Ana Ivanovic beat Daniela Hantuchova 6-2, 7-6 (7-2); 16th seed Dominika Cibulkova raced past Zheng Zie 6-2, 6-0; 22nd-seeded Maria Kirilenko topped Ksenia Pervak 6-2, 6-1; and Garbine Muguruza Blanco knocked off 24th-seeded Flavia Pennetta 6-2, 1-6, 7-6 (8-6).