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Sloane Stephens defeats Madison Keys to win first U.S. Open

NEW YORK -- Sloane Stephens defeated Madison Keys 6-3, 6-0 in U.S. Open final for her first Grand Slam title.

Stephens broke No. 15 Madison Keys' serve twice and won the set 6-3. Keys hadn't lost her serve in either of her two previous matches. 

The unseeded Stephens used her strong defensive skills to keep rallies alive, and Keys lost too many of them while making 17 unforced errors. Stephens committed just two. 

Tennis: U.S. Open
Madison Keys after losing a game to Sloane Stephens of the USA in the Women's Final in Ashe Stadium at the USTA Billie Jean King National Tennis Center.  Robert Deutsch-USA TODAY Sports

This was the first all-American U.S. Open final in 15 years. 

Stephens outlasted Venus Williams in her semifinal match on Thursday, while Keys routed a fourth American, CoCo Vandeweghe. 

Stephens joined Kim Clijsters (2009) as the only unseeded U.S. Open women's champions in the Open era, which dates to 1968.

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