Sebastian Fundora has vowed to win this Sunday’s Las Vegas title headliner even quicker than his last outing in the famed MGM Grand – against Tim Tszyu.

Having now twice upset Australia’s longtime pay-per-view king, Fundora has declared his career ready to reach “superstar” status with a KO win against American great Keith Thurman this weekend.

Fundora vs Thurman | Sunday 29 March from 11am AEDT | WBC Super Welterweight World Champion Sebastian Fundora will return to the ring looking to continue his 154-pound reign against the former unified world champion Keith Thurman. | Order Now with Main Event on Kayo Sports.

The headliner — which will be shown live on Main Event and Kayo Sports — will also be Fundora’s first appearance since forcing Tszyu to retire on his stool last July.

Asked for a prediction for the Thurman fight by Fight Hub TV this week, Fundora replied: “I see a fifth or sixth round stoppage.

“A win over him is going to catapult me to a different level in this sport. Not just being a champion but a superstar.”

The KO declaration came immediately after the fight press conference, where ‘The Towering Inferno’ initially made it known he doesn’t expect to go the distance with Thurman.

“I definitely don’t see this going 12 rounds,” he said.

“But no matter how long it goes, it ends with me having my hand raised.

“We’re gonna have a great night … expect ‘The Towering Inferno’ to burn Las Vegas down once again.”

Before finishing Tszyu last July, the WBC super welterweight champ had also needed just four rounds to finish Chordale Booker in March that saw year.

The double means that of his 23 career wins, 15 have now been stoppages.

Regardless, the champ is refusing to underestimate the great dubbed ‘One Time’, and who is also coming off victory over an Australian — having last start stopped Brock Jarvis in what was tipped to be a build towards his own fight with Tszyu.

“Thurman is one of my best opponents for sure,” Fundora continued. “But I have to look at it like just another fight.

“I have to look at it as my job.

“This is work for me, and I just have to clock in.”

Asked for his own thoughts at the press event Thurman said: “I’m here to hurt this boy … trying to send him home beltless.

“Fundora gets hit.

“He’s used to trading and going at it, but I’m here to put that fire out.”

The champ, meanwhile, suggested Thurman was underestimating him.

“He doesn’t think we’re mature enough to be in the ring with him,” Fundora said. “As in not experience-wise.

“[But] I’ve been boxing my whole life as well.

“A lot of people think we just blasted on the scene because we’re tall and it just happened for us. No. Rome wasn’t built in one day, and it’s the same thing for Sebastian Fundora.”

Quizzed after the press conference about seemingly being unfazed by Thurman’s famed chatter, the champ continued: “That’s how I’ve been raised, to respect.

“I don’t have any ill feelings towards anyone. I’m going in there and I’m going to punch you in the face. What more can I say?

“[Plus with] the people that really piss you off, you can’t do that in the streets.

“If I have someone talking to me though, talking bad to me, I have the opportunity to hit ‘em for 12 rounds, 36 minutes.

“So everything I have, all the bad feelings or whatever the case is, they do right there and then.”

Fundora added he had also noticed something more behind Thurman’s words.

“I sense the respect from him,” he stressed. “He talks a lot but I still sense the respect. I can see it, I can feel it …”

And as for where he goes next in victory?

“There’s all kinds of names,” Fundora said. “Errol Spence is coming back, that’s a fight that I would want.

“We have the other champions too.

“We have Josh Kelly and Xander Zayas. I’d like to have all the belts as well. But these are just ideas right now. We can’t really think too much on it until we pass Keith Thurman.”