MUNICH, GERMANY - APRIL 28: Belgium's David Goffin plays the ball during his round of 16 match at the BMW Open tennis tournament at Iphitos tennis club on April 28, 2016 in Munich, Germany. (Photo by Alexandra Beier/Getty Images For BMW)
MUNICH, GERMANY - APRIL 28: Belgium's David Goffin plays the ball during his round of 16 match at the BMW Open tennis tournament at Iphitos tennis club on April 28, 2016 in Munich, Germany. (Photo by Alexandra Beier/Getty Images For BMW)