Latvian Sevastova stuns defending champ Stephens in U.S. Open quarters

Anastasija Sevastova of Latvia celebrates during the women's singles quarterfinal match against Sloane Stephens of the United States at the 2018 US Open tennis championships in New York, the United States, Sept. 4, 2018. Sevastova won 2-0. (Xinhua/Wang Ying)