Hong Kong shuttler Ng Ka-long snatched the men's Thailand Masters badminton title Sunday after a shaky start against Japan's Kenta Nishimoto, whose compatriot Akane Yamaguchi beat Korea's An Se-young in a hard-fought women's final.

World number nine Ng clinched victory after Nishimoto took the first game in a 16-21, 21-13, 21-12 duel. His win in the $150,000 tournament is his first in a long time - Ng's last victory was at the Malaysia Masters in 2017 and the Hong Kong Open the year before.

Another rivalry came to a head in the women's finals when Japan's Akane Yamaguchi conquered her teenage opponent An Se-young in two games. The 17-year-old Korean, voted Most Promising Player of 2019, had previously beaten world number three Yamaguchi in November.

In women's doubles Chinese pair Chen Qing Chen and Jia Yi Fan beat Korea's Baek Ha-na and Jung Kyung-eun in a 17-21, 21-17, 21-15 match.