Serena loses Grand Slam bid in shocking upset

A combination photograph of Flavia Pennetta (L) of Italy reacting after defeating Simona Halep of Romania in their women's singles semifinal match and Roberta Vinci of Italy reacting after defeating Serena Williams of the US in their women's singles semifinal match at the US Open Championships tennis tournament in New York, September 11, 2015. [Photo/Agencies]