Japanese Boxer, 28, Dies After Title Fight and Emergency Surgery
The fighter was rushed to the hospital in Tokyo and “diagnosed with acute subdural hematoma.”

Shigetoshi Kotari/Instagram
Japanese boxer Shigetoshi Kotari has died days after being rushed to the hospital after an Aug. 2 title fight in Tokyo. Kotari, who was pronounced dead on Friday, was facing off against fighter Yamato Hata for the Oriental and Pacific Boxing Federation super featherweight title at Korakuen Hall when he fainted after going 12 rounds. After the match ended in a draw, Kotari said he felt ill and then collapsed. People reported that he was rushed to the hospital and “diagnosed with acute subdural hematoma,” according to the Japan Boxing Commission (JBC). After craniotomy to relieve pressure, his condition did not improve. The World Boxing Council (WBO) posted a tribute Friday on X in celebration of his life and career, which included a record of eight wins, two draws, and two losses. “Rest in peace, Shigetoshi Kotari 🕊️,” WBO wrote. “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.” The JBC added that another boxer also suffered a critical injury that night that also required surgery.
Rest in peace, Shigetoshi Kotari 🕊️
— WBO (@WorldBoxingOrg) August 8, 2025
The boxing world mourns the tragic passing of Japanese fighter Shigetoshi Kotari, who succumbed to injuries sustained during his August 2nd title fight.
A warrior in the ring. A fighter in spirit. Gone too soon.
Our thoughts and prayers are… pic.twitter.com/PjZtDyBIU2
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