An inquest into the death of Sydney boxer Davey Browne Jr, who died of injuries sustained in a regional title fight in September 2015, began this week.
The 28-year-old father-of-two was knocked out 30 seconds from the scheduled end of his 12-round International Boxing Federation Pan Pacific Super Featherweight Title fight in southwestern Sydney.
He initially regained consciousness, but then collapsed off his stool and was rushed to Liverpool Hospital in a critical condition suffering from brain injuries.
His family later made the heartbreaking decision to turn off his life support.
Browne's death prompted the Australian Medical Association to renew calls for a ban on boxing with vice-president Dr Stephen Parnis saying it was an "entirely avoidable" tragedy.
"One punch can kill, whether you are outside a pub on a Friday night or in a boxing ring, and this is the thing that causes young lives to be ended so traumatically," he told the ABC at the time.
The inquest began on Wednesday at the Coroner's Court in Glebe.
During the start of the inquest, footage was shown of the fight that led to Browne's death.
In an opening address at the inquest, witnesses described Browne's performance as waning as the fight went on with his mother yelling "stop the fight" numerous rounds before her son was knocked out.