Faces of the U.S. Open(30 images)

The expressions on players' faces during the U.S. Open Tennis Championships in September 2015.

Roberta Vinci in the semi-finals at the US Open Tennis Championships
Roberta Vinci returns the ball to Serena Williams of the USA in the third set of their semi-final match at the US Open Tennis Championships at the USTA Billie Jean King National Tennis Center in New York City on September 11, 2015. Williams, who lost 2-6, 6-4, 6-4, was looking to be the first player to complete the calendar year grand slam since Steffi Graf did so in 1988. Photo by Monika Graff/UPI | License Photo
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