“Rest in peace, Shigetoshi Kotari. The boxing world mourns the tragic passing of Japanese fighter Shigetoshi Kotari, who succumbed to injuries sustained during his August 2nd title fight,” they wrote on Friday alongside a black and white photo of Kotari raising one arm in the air.

Shigetoshi Kotari and Hiromasa Urakawa pass away within a day of each other after separate bouts on the same card.

Shigetoshi Kotari, a Japanese boxer, was a super featherweight fighter who fought 12 times during his professional career and won eight bouts.