While many regard Kambosos as an undisputed champion, there are also those who believe Haney has a legitimate claim to his own WBC title.

In a bout expected to break Australia's attendance record of 51,026, which was set by Manny Pacquiao and Jeff Horn's 2017 fight in Brisbane, Kambosos will seek to defend his IBF, WBO, WBA, and Ring Magazine lightweight world titles against WBC title-holder Haney on Saturday, June 4 from Marvel Stadium, Melbourne

Haney is a 23-year-old rising star from Las Vegas who has competed on DAZN for Eddie Hearn's Matchroom Boxing during his past six fights, but his deal expired. Haney now has a signed deal under a multi-fight co-promotional with Top Rank and Lou DiBella to fight.

The deal includes a rematch clause if Haney (27-0, 15 KOs) wins, sources said. In the event Kambosos (20-0, 10 KOs) loses and exercises his right to a return bout, that fight also would take place in his native Australia. Even if Haney loses, his next bout afterward would be co-promoted by Top Rank and DiBella.

He is also ranked the No. 4 boxer at 135 pounds by ESPN.

Kambosos, 28, on the other hand, holds all four major sanctioning body titles at 135 pounds, needed an opponent for the first defense of his championship after Vasiliy Lomachenko decided to remain in war-torn Ukraine rather than head to Australia for training camp.

Speaking to the press, Kambosos expressed his joy as he comes back to fight on his own home soil.

"After five years of chasing championship glory abroad and fighting in enemy territory, I return home to defend what I have conquered in the boxing world, my world lightweight titles," said Kambosos.

"Everything I have put my mind to and manifested has come true with my relentless hard work, dedication, and discipline to the sport I love.

"I have always said I would become world champion the hard way, fighting abroad and then bring back a mega stadium fight to make my world title defense.

"I am very excited and hungry to continue building my legacy, and I will be victorious by any means necessary on June 4 when Haney steps up into the lion's den of Marvel Stadium against this Aussie Greek lion. I will take not only his belt but put a serious dent in his young career." 

Regarded as Fight of The Decade

The smooth-boxing Haney isn't a power puncher but possesses an excellent jab and is regarded as one of the sport's best defensive fighters.

Kambosos wasn't well-regarded before he earned a title shot with a split-decision win over Lee Selby in October 2020. Even then, he was viewed as a routine title defense against Lopez, then seen as one of the sport's top pound-for-pound boxers.

But Kambosos shocked the boxing world with his grit, combination punching, and power in one of the best performances of 2021.

Kambosos won the IBF, WBO, WBA titles and the WBC franchise title from Lopez. Haney is the holder of the WBC's title as well.

If Haney can defeat Kambosos twice, there will be plentiful options for him on ESPN. He's discussed a jump to 140 pounds in the near future, where he could be matched with Lopez. But it remains at 135, a high-stakes showdown with Lomachenko is possible in 2023, as is a fight with Ryan Garcia.

But first, Haney will travel halfway around the world for his shot at lightweight supremacy.