New York: Australian Open champion Stanislas Wawrinka powered into the quarter-finals of the US Open on Monday with a 7-5, 4-6, 7-6 (9/7), 6-2 victory over Tommy Robredo. (Read: Djokovic, Murray Book Quarter-Final Showdown)
The third-seeded Swiss fired 18 aces, saving two set points in the third-set tiebreaker and dominating the fourth set against the 16th-seeded Spaniard.
Wawrinka fired 75 winners, including 27 in the third set that surpassed Robredo's total of 19 for the match. (Bouchard Knocked Out, Serena Storms Into Quarters)