New York: Sara Errani reached the quarter-finals at a Grand Slam event for the third time this year, beating Angelique Kerber in straight sets at the US Open.
The 10th-seeded Italian won 7-6 (5), 6-3 on Monday. Before this year's Australian Open, she had never been past the third round at a major tournament.
Kerber made a surprise run to the US Open semi-finals a year ago and had advanced to at least the quarters at the French Open and Wimbledon in 2012.
Errani, the runner-up at Roland Garros, needed nearly 2 hours to win in two sets. The sixth-seeded Kerber double-faulted to end the first-set tiebreaker. She had 38 unforced errors.
When Kerber's final forehand bounced off the net cord and back, Errani dropped her racket and pumped both fists.