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
2017 US Open (tennis) record $3.7 million goes to both the men's and women's singles champions, which is increased to 7.5 percent from last year. This made the US Open the most lucrative and highest paying tennis grand slam in the world, leapfrogging Wimbledon in total prize money fund. Prize money for the US Open qualifying tournament is also up 49.2 percent, to $2.9 million. The total prize money for the wheelchair tennis events was $200,000. Seeds are based on the ATP and WTA rankings as of August 21, 2017. Rank and points before are as of August 28, 2017. Rankings as of August