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

Shigetoshi Kotari, 28, had emergency brain surgery last weekend following a fight for the OPBF super-featherweight title

Japanese boxers Shigetoshi Kotari and Hiromasa Urakawa have died from brain injuries suffered during separate fights at an Aug. 2 match in Tokyo.