Ernests Gulbis Pictures
NEW YORK, NY - AUGUST 29: Dominic Thiem of Austria serves to Ernests Gulbis of Latvia on Day Five of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)