Defending champion Kim Clijsters advanced to the third round of the U.S. Open with a 6-2, 6-1 victory over Sally Peers. Venus Williams struggled early before reeling off the last six points of a tiebreak and beating 193rd-ranked qualifier Rebecca Marino of Canada 7-6 (3), 6-3. Unseeded Ana Ivanovic of Serbia also reached the third round with a 6-3, 6-0 victory over 21st-seeded Zheng Jie of China.
