page_title: 2009 US Open (tennis)
section_title: Day 7 (September 6)
hierarchical_section_title: 2009 US Open (tennis) / Day-by-day summaries / Day 7 (September 6)
caption_attribution_description: Third round doubles match at the 2009 US Open with Maria Kirilenko
context_page_description: The 2009 US Open was a tennis tournament played on outdoor hard courts, held from August 31 to September 14, 2009 in the USTA Billie Jean King National Tennis Center at Flushing Meadows, New York City, United States. Originally, it was scheduled to end with the men's singles final match on Sunday, September 13, but due to rain the tournament was extended by one day. Like the Australian Open, the tournament featured night matches.
  Former World No. 1 and 2005 US Open women's singles champion, Kim Clijsters, competed in the 2009 US Open after being granted a wild card entry, returning to professional tennis after more than two years of retirement. She made it to the women's singles semi-finals, where she knocked out the defending champion Serena Williams in controversial circumstances. In the final, Clijsters defeated Caroline Wozniacki, the first Dane, man or woman, to reach a Grand Slam final in the Open Era, in straight sets: 7–5, 6–3. Clijsters thus became the first mother to win a Grand Slam since Evonne Goolagong Cawley in 1980. In the process, she also became the first unseeded player and wildcard to win the tournament.
context_section_description: Spaniards Rafael Nadal and Nicolás Almagro played in a third-round match which was won in straight sets by Rafael Nadal, who would face Frenchman Gaël Monfils in the fourth round. Monfils beat Argentine José Acasuso in straight sets. Chilean Fernando González won in straight sets against Czech Tomáš Berdych and would face Frenchman Jo-Wilfried Tsonga, who beat fellow Frenchman Julien Benneteau in straight sets. Spaniard Juan Carlos Ferrero won over higher-seeded Frenchman Gilles Simon. Ferrero advanced to play Argentine Juan Martín del Potro, who won in four sets over Austrian Daniel Köllerer. Croatian Marin Čilić won in three easy sets over Denis Istomin of Uzbekistan to face Briton Andy Murray, who beat American Taylor Dent in three sets.
  American Serena Williams beat Slovakian Daniela Hantuchová in two sets that totaled 64 minutes of action to face in the quarterfinals Italian Flavia Pennetta, who beat Russian Vera Zvonareva. Zvonareva had six match points in the second set, but had a meltdown and lost the third set 6–0. Chinese Li Na won in two sets over Italian Francesca Schiavone. Na advanced to play wild-card Belgian Kim Clijsters, who took down third-seeded Venus Williams in three sets after two love games, 6-0 for Clijsters and 0-6 for Venus Williams. The third set went to Clijsters in one break of Venus's serve 6–4.
  Seeds out:
  Men's Singles:  Gilles Simon [9],  Tomáš Berdych [17],  Nicolás Almagro [32]
  Women's Singles:  Venus Williams [3],  Vera Zvonareva [7],  Daniela Hantuchová [22],  Francesca Schiavone [26]
  Men's Doubles:  Martin Damm /  Robert Lindstedt [11]
  Women's Doubles:  Anabel Medina Garrigues /  Virginia Ruano Pascual [2],  Anna-Lena Grönefeld /  Patty Schnyder [9]
  Schedule of play
caption: Elena Vesnina in a doubles match with Maria Kirilenko
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