2009 US Open – Women's Singles 2009 US Open – Women's Singles Serena Williams was the defending champion, but was defeated in the semifinals by the eventual champion Kim Clijsters. Clijsters defeated first time Grand Slam finalist Caroline Wozniacki in the final to win her second US Open title. Clijsters became the first unseeded player and wild card to win the tournament, and the first mother to win a major since Evonne Goolagong in 1980. Following her win, she made 19th in the rankings. This was the final Grand Slam appearance for former two-time Grand Slam champion, Amélie Mauresmo, who lost to Aleksandra Wozniak in the
2009 LA Tennis Open Open Series. In addition to the singles and doubles events, a Legends Invitational Singles competition was held, featuring Michael Chang, Stefan Edberg and Jim Courier, winner of the competition at the 2008 Countrywide Classic. The LA Tennis Open kicked off with the "Millennium Challenge" featuring Pete Sampras returning to the University of California, Los Angeles (UCLA) to play Marat Safin in a rematch of their 2000 US Open final, won by the Russian 6–4, 6–3, 6–3. Fourteen-time Grand Slam champion Sampras, who held the World No. 1 ranking for a record 286 weeks, was recognized as the 2009 LA Tennis