SYDNEY - The Australian Medical Association (AMA) called for a ban on boxing following the death of a 28-year-old fighter after he was knocked unconscious in the ring. Davey Browne Jr died early Tuesday from his injuries from an IBF super-featherweight regional title fight four days previously, after his family authorised his life-support to be turned off in a Sydney hospital. He was knocked out 30 seconds from the end of the super featherweight 12-round contest against Carlo Magali and was hospitalised in critical condition with brain injuries.