South Korea's An Se-young, the world No. 1, beat Japan's Akane Yamaguchi 21-17, 21-9 on Tuesday to win the women's singles title at the Aichi-Nagoya Asian Games in Ichinomiya, Japan. She is the first player to win back-to-back golds in the event since it began in 1962, and she did not drop a game in the tournament. The 24-year-old, who also holds Olympic and world titles, has strengthened her claim to be the top player of her generation.