The boxing community is reeling from the Shigetoshi Kotari death, confirmed by the World Boxing Organization on August 8. In their statement, the WBO expressed deep sadness and extended condolences to his family, his team, and the Japanese boxing community.
The boxing world mourns the tragic passing of Japanese fighter Shigetoshi Kotari, who succumbed to injuries sustained during his Aug. 2 title fight. A warrior in the ring. A fighter in spirit. Gone too soon.
– WBO Statement
Shigetoshi Kotari, only 28 years old, collapsed after a grueling 12-round match against Yamato Hata for the OPBF Super Featherweight title in Tokyo. The fight ended in a draw, but Kotari suffered an acute subdural hematoma, a serious brain injury caused by head trauma.
According to the Japan Boxing Commission, Kotari was rushed to a Tokyo hospital immediately after losing consciousness. He underwent emergency surgery, but despite medical efforts, his condition did not improve. Six days later, the Shigetoshi Kotari death left the boxing world in shock.
Japan Boxing Commission confirmed he underwent an emergency craniotomy following his collapse in the ring.
Just one day before the fight, Kotari posted a smiling photo alongside his opponent on Instagram, writing in Japanese, “Finally the time has come… I will definitely be a champion.” Those words have since been shared widely as a symbol of his unwavering determination.

Following the tragedy, the JBC announced immediate reforms: OPBF title fights will now be reduced from 12 rounds to 10, aiming to prevent future incidents. This change mirrors safety policies in other organizations after similar in-ring accidents, as reported by BBC Sport.
With a professional record of eight wins, two draws, and two losses, Kotari was widely respected for his relentless style. Fans and fellow athletes from across the globe have paid tribute, remembering him not only as a skilled fighter but also as a man of courage and spirit.
“Rest in peace, Shigetoshi Kotari 🕊️” – Message from the World Boxing Organization
The Shigetoshi Kotari death serves as a sobering reminder of the dangers athletes face in combat sports. His legacy will endure in the hearts of fans who witnessed his passion, skill, and commitment to the sport he loved.