All business, George Kambosos Jr is drawing on the "sweet science" of boxing to help him exact revenge in Sunday's eagerly-awaited world title rematch with Devin Haney.
Kambosos suffered a crushing defeat at the hands of Haney in June as the American became the first fighter to unify the lightweight division in the 18-year four-belt era.
The home hope was unable to get at Haney, who jabbed his way to a unanimous points decision at Melbourne's Marvel Arena.
The first loss of his 21-stoush career sent Kambosos back to the drawing board in search of an answer to Haney's intense and punishing jab.
Few pundits give Kambosos a chance of turning the tables at Rod Laver Arena and regaining his IBF, WBO and WBA belts and claiming the WBC strap as well.
But the 29-year-old Sydneysider is relishing being back in the underdog role and confident he has the game plan to shatter the undefeated Haney's aura of invincibility.
"We have put in fantastic work not only to evade his jab but whatever he tries to bring, it doesn't matter," Kambosos said on Friday.
"Did I let him jab too much (last time)? Yeah, he's got a great jab but that's why boxing is the sweet science. That's why we love this sport so much.
"It's the unknown as well. They don't know what I'm about to bring. And, again, I don't know what he's about to bring. He might bring this Arturo Gatti kind of (thunderous) style, supposedly.
"He talks about the pound-for-pound list he wants to get in and how they're going to throw a lot of offence. We might have Arturo Gatti right there."
Legendary promoter Bob Arum is encouraging Kambosos (20-1, 10KO) to drag Haney (28-0, 15KO) into an old-fashioned brawl, claiming the Australian has little chance of out-boxing the world champion.
"Bob Arum is going to have to just watch. I love Bob, but he's doubted me many times," Kambosos said.
"Actually there's a great quote before I fought Teofimo Lopez - he said he had a better chance of knocking out Tyson Fury than I had of beating Lopez - so be careful. I'm going to shock the world again."
Kambosos, bidding to become Australia's first undisputed world champion in the four-belt era, was tight-lipped about how specifically he planned on countering Haney's relentless jab.
"You learn from your losses so I've made my changes. I'm not going to give anything away and Sunday is when I'm going to do my talking," he said.
"Let's see who it is who laughs last. That's what I'll say."
Unlike before their first fight, Kambosos has been deliberately quiet and low key, sending his family away to Portugal so he could train without distraction.
His three children were ringside last time around, but aren't even in Melbourne for the sequel.
"Boxing is all about sacrifices and you need to make those sacrifices - it gives me that edge," he said.
"Sacrifices, dedication and discipline is what it's all about. No distractions.
"I'm ready for a great fight and a great victory. Back to the old Ferocious Kambosos.
"I'm mentally and physically focused on this fight right now. So nothing else matters.
"Nothing will break my focus, nothing will break that tunnel vision I have. I'm only interested about Sunday."