BRUSSELS, BELGIUM - SEPTEMBER 20: David Goffin (BEL) serves during the singles match between David Goffin of Belgium and Diego Schwartzman of Argentina on Day 3 of The World Group Semi Final Davis Cup match between Belgium and Argentina at Forest National Stadium on September 20, 2015 in Brussels, Belgium. (Photo by Jorge Luis Alvarez Pupo/LatinContent via Getty Images)
