2009 US Open – Women's singles
Kim Clijsters defeated Caroline Wozniacki in the final, 7–5, 6–3 to win the women's singles tennis title at the 2009 US Open. It was her second US Open title and her second Major singles title overall. She became the first unseeded player and wild card to win the US Open, and the first mother to win a major since Evonne Goolagong in 1980 Wimbledon Championships. Following her win, she appeared at 19th in the rankings. This was the first time since the 2007 Australian Open where Clijsters participated in a major, as she  was contesting just her third tournament since coming out of retirement. Serena Williams was the defending champion, but was defeated in the semifinals by Clijsters. A foot fault was called for Williams at the end of the second set, producing a double fault and two match points for Clijsters. Williams argued the call and was given a point penalty for her attempt to intimidate a line judge which ended the match. This was the final major appearance for two-time major champion Amélie Mauresmo, who lost to Aleksandra Wozniak in the second round. This was also the final major singles  appearance of Ai Sugiyama, who was on a record-breaking 62nd consecutive Grand Slam women’s singles appearance, losing in the first round to Samantha Stosur. Sugiyama's record remains standing. Seeds. Dinara Safina "(third round)"