Top Seeds Fall in Japan Open 2025 Second Round

The wave of surprises continues at the Japan Open 2025 held at Tokyo Metropolitan Gymnasium — top-seeded men’s singles players keep falling in the tournament’s second round.

Chou Tien Chen became the latest casualty after losing to home favorite Koki Watanabe in a match that lasted 89 minutes with scores of 21-16, 22-24, 17-21.

The Indonesia Open 2025 finalist’s defeat adds to the growing list of eliminated top seeds — Kunlavut Vitidsarn, Anders Antonsen, and Jonatan Christie who were stopped in the first round.