Philipp Kohlschreiber Pictures
NEW YORK, NY - SEPTEMBER 01: Philipp Kohlschreiber of Germany celebrates victory in his men's singles third round math against Alexander Zverev of Germany on Day Six of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)