Taiwan’s Hsieh Su-Wei has become the first Asian winner of the WTA Tour’s Malaysian Open after her opponent, Petra Martic, retired with exhaustion after playing both her semifinal and final matches on the same day.

The unseeded Hsieh beat the fifth-seeded Croat 2-6 7-5 4-1.

Earlier on Sunday, Martic beat second-seeded Jelena Jankovic of Serbia 6-7 (5-7) 7-5 7-6 (7-5) in a semifinal lasting more than three hours.

Rain triggered a suspension of play on Saturday at the Bukit Kiara Equestrian and Country Resort.

Martic had only a few hours to rest before facing Hsieh, ranked 123th in the world.

Both were playing in their first WTA final.

The 21-year-old Martic won the first set and led the second by 4-2 before she began to significantly tire. She lost the set after appearing to have leg cramps.

Hsieh, 26, led 4-1 in the third set before Martic retired after an hour and 45 minutes.

The tournament was plagued by rain delays and injuries all week.

Top-seeded Agnieszka Radwanska of Poland withdrew on Friday with an elbow injury.