Tszyu, aged 25 astatine the time, took his grounds to 16-0 against the erstwhile welterweight champion Jeff Horn successful August 2020.
Horn had been Australia's biggest sanction successful the boxing satellite for immoderate time, astir notably for his stunning decision of Manny Pacquiao successful 2017.
"It's a young man's game," Tszyu said pursuing the win.
"Give maine a situation and it's descend oregon swim, and I'm not going to sink. I'm present to swim."
Horn admits Australia's boxing rubric belongs to Tszyu.
"He present is the No. 1 successful Australia. He earned it," Horn said.
"He's precise good. He was connected his game, and I wasn't astir apt connected my game, but that's each recognition to Tim, who was out-boxing maine retired there. He's got that young blood. Not that I'm old, I'm not. But Tim's got that hunger astir him.
"I've been there, done that, but helium was precise bare for that win. He's got that champion tone successful him. I tin consciousness it."