Haruhiro Hamaguchi

Haruhiro Hamaguchi is a Japanese professional baseball pitcher for the Fukuoka SoftBank Hawks of Nippon Professional Baseball. He has previously played in NPB for the Yokohama DeNA BayStars.

IG haruhiro_hamaguchi0316

Career

Yokohaka DeNA BayStars

Hamaguchi began his career in 2017 with the Yokohama DeNA BayStars. In Game 4 of the 2017 Japan Series, with DeNA facing elimination, Hamaguchi did not allow a hit for innings.
On October 10, 2018, Hamaguchi was selected to the Japan national baseball team at the 2018 MLB Japan All-Star Series.

Fukuoka SoftBank Hawks

Hamaguchi joined the Fukuoka SoftBank Hawks in 2025. On April 23, 2025, it was announced that Hamaguchi had undergone an endoscopic resection for ossification of the 9th and 10th thoracic yellow ligaments. He additionally underwent an elbow joint cleaning procedure due to arthritis, and was ruled out for three-to-four months.