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
2016 US Open – Men's Singles 2016 US Open – Men's Singles Novak Djokovic was the defending champion, but lost in the final to Stan Wawrinka, 7–6, 4–6, 5–7, 3–6. This was the first time the men's singles champion at the US Open won the match after losing the first set since Juan Martín del Potro in 2009. This was also the first time the men's singles champion at the US Open won the title after being a match point down since Djokovic in 2011, with Wawrinka having saved a match point against Dan Evans in the 3rd round. As he had done in his 2