Wawrinka Beats Robredo, Awaits Nishikori-Raonic Winner In QFs
World No. 4 Stan Wawrinka saved two set points in a crucial third-set tie-break before prevailing against No. 16 seed Tommy Robredo 7-5, 4-6, 7-6(7), 6-2 on Monday for a place in the US Open quarter-finals.