Samantha Stosur, of Australia, poses with the championship trophy after beating Serena Williams at the U.S. Open in New York on Sunday, Sept. 11, 2011. (AP Photo/Charles Krupa)
Serena Williams reacts after winning her semifinal match against Caroline Wozniacki of Denmark at the U.S. Open in New York on Saturday, Sept. 10, 2011. (AP Photo/Charlie Riedel)
Serena Williams reacts during her match against Ana Ivanovic of Serbia during the U.S. Open tennis tournament in New York, Monday, Sept. 5, 2011. (AP Photo/Mel Evans)
ASSOCIATED PRESS Serena Williams reacts during her match against Ana Ivanovic. Williams won 6-3, 6-4 to move into the quarterfinals.
Serena Williams, who sat out a year with a variety of health problems, continued her comeback Tuesday night, taking part in mixed doubles, doubles and singles in World Team Tennis. She won doubles and singles but lost mixed doubles. (Associated Press)
ASSOCIATED PRESS Serena Williams has turned her back on her hot-tempered ways, preferring to serve as a role model for youths.
Venus (left) and Serena Williams, at the Southeast Tennis and Learning Center in April, are marquee players for the Washington Kastles, whose World TeamTennis season began Tuesday night. (Drew Angerer/The Washington Times)
associated press Serena Williams reacts during her 6-3, 7-6 (8-6) loss to Marion Bartoli at Wimbledon. Venus Williams also lost, marking the first time the sisters were eliminated from a Grand Slam event on the same day since the French Open in 2008.
Serena Williams of the United States returns a forehand shot to France's Marion Bartoli during their match at the All England Lawn Tennis Championships at Wimbledon, England, on Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)
