(Photo credit: Geoff Burke-Imagn Images)
David Goffin of Belgium upset No. 2 seed Alexander Zverev 6-4, 7-5 at the Rolex Shanghai Masters in China on Wednesday, a day that saw other top seeds advance to the quarterfinals in straight sets.
Despite eight aces, Zverev couldn't count on his serve when he needed it most. Goffin converted four of 11 break opportunities and was broken just twice, providing the difference in the
