(Reuters) -Defending champion and world number one Iga Swiatek exited the U.S. Open in the fourth round on Sunday, losing to Latvia’s Jelena Ostapenko 3-6 6-3 6-1 at Arthur Ashe Stadium.
The Polish three-times Grand Slam winner had not dropped a set before Sunday’s match but was unable to hold off the 20th seed’s charge.
The Latvian fired off a crisp forehand winner to break her opponent’s serve on match point, pumping her fist as she extended her career head-to-head record against Swiatek to 4-0.
Ostapenko, who won at Roland Garros in 2017, next faces American sixth seed Coco Gauff, who beat wildcard Caroline Wozniacki in three sets earlier in the day.
(Reporting by Steve Keating and Amy Tennery in New York; Editing by Christian Schmollinger, Peter Rutherford)
