NEW YORK, NY - SEPTEMBER 06: Angelique Kerber of Germany celebrates after defeating Roberta Vinci of Italy during their Women's Singles Quarterfinal Matchon Day Nine of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 6, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
