China's Zheng Qinwen produced near-flawless serves to defeat American Sofia Kenin 7-6(5) 6-3 and capture the Pan Pacific Open title on Sunday for her third trophy this season. Zheng hit 33 winners and fired off 16 aces as she took the victory in an hour and 52 minutes under a closed roof after heavy rain interrupted the first set.

Olympic champion Zheng Qinwen moved into the Tokyo final but her opponent Sofia Kenin was left sweating on her fitness after retiring from her doubles match on Saturday.

TOKYO (AP) — Former Australian Open champion Sofia Kenin has advanced to the final of the Pan Pacific Open with a 6-4, 6-4 win over ninth-seeded Katie Boulter on Saturday.

It is a battle between two Grand Slam finalists in the WTA Tokyo final. Olympic gold medalist Qinwen Zheng will battle 2020 Australian Open champion Sofia Kenin for the title.

Olympic champion seals place in season-ending WTA Finals, while Kenin – who played with her right thigh strapped – can take many positives.

The American had struggled throughout the year and fell out of the top 150 of the WTA ranking. However, she turned it around in Tokyo to beat 10th seed Wang Xinyu, Clara Tauson, third seed Daria Kasatkina, and ninth seed Katie Boulter en route to her first tour final of the year.

World No.7 Zheng Qinwen continued her successful Asian swing by defeating Sofia Kenin 7-6(5) 6-3 in the final of the Toray Pan Pacific Open in Tokyo.

China's Zheng Qinwen produced near-flawless serves to defeat American Sofia Kenin 7-6(5) 6-3 and capture the Pan Pacific Open title on Sunday for her third trophy this season.