Naomi Osaka stuns S. Williams to win her first Grand Slam title at U.S. Open

Serena Williams (R) of the United States talks to Naomi Osaka of Japan during the awarding ceremony after the women's singles final match at the 2018 US Open tennis tournament in New York, the United States, Sept. 8, 2018. Osaka won 2-0 and claimed the title. (Xinhua/Wang Ying)