articleThe Brief Two Japanese boxers died from the same brain injury sustained in separate bouts on the same card at Tokyo’s Korakuen Hall. The Japanese Boxing Commission is changing bout lengths after the deaths. Two boxers in Japan died last week after sustaining the same brain injury in separate bouts earlier in the month. The Japanese Boxing Commission is changing bout lengths after the deaths. "We extend our deepest condolences to the families, friends, and the Japanese boxing community during this incredibly difficult time."