The 2015 US Open was a tennis tournament played on outdoor hard courts. It was the 135th edition of the US Open, the fourth and final Grand Slam event of the year. It took place at the USTA Billie Jean King National Tennis Center.
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Serena Williams was the three-time defending champion in the women's singles event and was also trying to complete the calendar Grand Slam, but she lost to Roberta Vinci in the semifinals. See more