India's Sania Mirza rallied past top seed Martina Hingis 4-6, 6-0, 6-4 in the second round of the Korea Open on Thursday, gaining quick revenge on the former number one for a defeat in Kolkata last week.

After losing the first set in which both players struggled to hold serve, Mirza raised her level of play and was able to push the Swiss world number eight around the court with her powerful groundstrokes.

Easing through the second without dropping a game, the world number 59 broke her opponent in the ninth game of the deciding set and held on to deny Hingis a chance of a third title this season.

Hingis beat Mirza in the semi-finals on her way to a Kolkata Open victory on Sunday to go with an Italian Open success earlier this year.

The 25-year-old five-time grand slam winner retired in 2002 due to foot and ankle injuries, but made a full-time comeback in January.

Mirza moves on to a quarter-final against Indonesia's Angelique Widjaja, who advanced with a 6-4, 6-3 victory over Virginia Ruano Pascual of Spain.