1982: Ray Mancini defeats South Korean boxer Duk Koo Kim in a boxing match held in Las Vegas. The fight, which was punishing for both boxers, was stopped 19 seconds into the 14th round with Mancini declared the winner by TKO. Minutes after the fight, Kim, 23, collapsed into a coma and was taken out of the arena on a stretcher. At the hospital, he was diagnosed with a subdural hematoma and underwent emergency brain surgery, but would end up dying four days later. His death would lead to significant changes in the sport designed to protect the health of boxers, including reducing title fights from 15 to 12 rounds, increasing the number of ring ropes from five to six, and introducing new medical procedures to fighters' pre-fight checkups.