Brisbane boxer Jeff Horn has delivered a stunning victory in his bout against Anthony Mundine, knocking out the veteran in the opening round.
The 30-year-old, aiming to bounce back from his first professional loss to Terence Crawford in June, delivered a left-hook which floored the ex-rugby league player midway through the first round in Brisbane.
The fight is expected to be the last of Mundine's 18-year professional career.
Mundine looked sluggish from the outset in the heavily anticipated bout, which started about an hour behind the scheduled.
After copping several shots from a faster and stronger Horn, Mundine was floored by a left-hook which slipped past his right glove.
After the defeat Mundine declared his "time's up" as a boxer, with the defeat effectively ending his 18-year professional career.
"Jeff proved tonight he's the better man," Mundine said.
"That's the next generation man. I was ready. I was prepared well. It's just boxing, you get caught sometimes."
Horn, who was aiming to rebuild his reputation after a first professional defeat to American Terence Crawford in June, said he was comfortable fighting at the 71kg catchweight.
"I feel really, really strong at this weight," the former WBO welterweight champion said.
"I was expecting a hard fight.
"I'm happy to get it over and done quickly."
Horn, who has indicated he'd be keen to organise a rematch with Crawford in Australia if possible, is also exploring the possibility of pursuing fights at heavier weight divisions.