Wawrinka Punches Ticket to U.S. Open Quarterfinals
Swizterland's Stan Wawrinka, the 2014 Australian Open champ, outlasted 16th-seeded Spaniard Tommy Robredo 7-5, 4-6, 7-6(7), 6-2 on Monday to earn a spot in the 2014 U.S. Open quarterfinals. The fourth-ranked player in the world fought off two set points in the third-set on his way to the Round of 16 victory at Louis Armstrong…

