Serena Williams of the United States reacts after the women's singles 4th round match against her compatriot Sloane Stephens at the 2013 U.S. Open tennis championships in New York, the United States, on Sept. 1, 2013. Serena Williams won 2-0 to enter the next round. (Xinhua/Fang Zhe)
Serena Williams of the United States returns the ball during the women's singles 4th round match against her compatriot Sloane Stephens at the 2013 U.S. Open tennis championships in New York, the United States, on Sept. 1, 2013. Serena Williams won 2-0 to enter the next round. (Xinhua/Fang Zhe)
Serena Williams of the United States returns the ball during the women's singles 4th round match against her compatriot Sloane Stephens at the 2013 U.S. Open tennis championships in New York, the United States, on Sept. 1, 2013. Serena Williams won 2-0 to enter the next round. (Xinhua/Fang Zhe)
Serena Williams of the United States reacts after the women's singles 4th round match against her compatriot Sloane Stephens at the 2013 U.S. Open tennis championships in New York, the United States, on Sept. 1, 2013. Serena Williams won 2-0 to enter the next round. (Xinhua/Fang Zhe)
