The 2012 Olympian dominated the contest from the opening bell, scoring a knockdown in the fifth and standing count in the sixth, before finishing things a round later with a devastating left hook to the jaw.
Hammond is known for is silky boxing skills, but this was a punch that will make the 147lb division sit up and take notice of his power.
“I feel my power is developing with every fight,” Hammond, now 14-0 (8 KOs), said. “That was the fourth opponent I’ve stopped in a row and I think there’s plenty more to come.
“I knew he was gone as soon as the punch landed. I couldn’t have thrown it any better because it was a beaut.
“It’s always a bit worrying for a boxer when your opponent goes to the canvas hard so I’m glad Gym is ok and I’m sure he’ll go on to have a great career.”
While it is still early days for the Moree man, he is keen to add further titles to his WBA Oceania and WBC Eurasia Pacific crowns and has a eye on the Commonwealth strap.
Hammond won an eliminator for the 53 nation alliance’s championship when he halted Jese Ravudi in May.
“The Commonwealth title is a very prestigious title with a lot of history and it’s definitely a good step forwards for me,” he said.
“I’ll probably have to travel to England to get a shot, but that’s fine by me. My promoter, Ricky Hatton, is based over there and I liked the country when I was in the Olympics so I’m happy to pack my gloves and gumshield whenever I get the call.”