2009 US Open – Women's Singles second round. This was also the final Grand Slam singles appearance of Ai Sugiyama, who was on a record-breaking 62nd consecutive Grand Slam singles appearance, lost in the first round to Samantha Stosur. Sugiyama's record-breaking run of 62 consecutive Grand Slam singles appearances remains unbeaten as of 2019. Dinara Safina "(Third round)" 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
2009 China Open – Women's Singles defeat a reigning world No. 1. Serena Williams replaced Safina as world No. 1 following the tournament by virtue of winning her second round match, though Williams herself would lose in the third round. The four Tokyo semifinalists received a bye into the second round. They are as follows: 2009 China Open – Women's Singles The 2009 China Open – Women's Singles was the women's singles event of the China Open, a WTA Premier Mandatory tennis tournament held in October in Beijing. Jelena Janković was the defending champion, but lost in the second round against Peng Shuai. Svetlana Kuznetsova won