OSAKA, Japan -- Chang Kai-chen of Taiwan stunned top-seeded Sam Stosur of Australia 6-4, 4-6, 7-6 (3) on Saturday to advance to the final of the Japan Open.
The 134th-ranked Chang broke Stosur twice in the opening set and won 73 per cent of the points on her first serve to reach her first WTA tour final of her career.
The 21-year-old Chang will face Britain's Heather Watson in Sunday's final after she defeated local favourite Misaki Doi of Japan 7-6 (2), 7-5 in their semifinal. Chang has beaten three seeded players on the way to the final.
Watson prevailed after breaking Doi four times in the second set to make up for losing her own serve three times. The 20-year-old Watson will also be appearing in her first career WTA final -- just three weeks after Laura Robson became the first British woman in 22 years to reach a title match.