American Devin Haney is the undisputed lightweight world champion at just 23 years old after winning unanimously on points.
Boasting a phenomenal kick, George Kambosos Jr could barely land a blow on Haney whose feet and escape were too good for the Aussie.
Haney won 116-112, 116-112, 118-110.
DREAM DASHED: Brave Kambosos Jr. fails as Haney is crowned undisputed lightweight champion
Watch heavyweights Justis Huni vs. Joseph Goodall fight for the WBO Oriental and IBF Pan-Pacific Regional titles. Wednesday, June 15 from 7:00 p.m. AEST LIVE with Main Event on Kayo Sports & Foxtel. ORDER NOW >
The result means Haney is the first lightweight fighter to win the WBA, IBF, WBO and WBC belts – and the youngest ever.
Kambosos Jr. has a rematch clause, with the sequel once again taking place in Australia.
MORE KAMBOSOS JR. VS HANEY WASH-UP
Bad blood boils over as dads clash in gruesome post-fight scenes
World reacts as ‘boring’ US star gives brutal ‘boxing lesson’ to Australian champion
Kambosos’ stylish response to heartbreaking defeat
The Australian said he would learn from the loss but some don’t think he should step into the ring with Haney again, with many believing the American was on a different level.
“He just boxed his match,” Kambosos said.
“He moved, he boxed, he didn’t want to come to the fight too much but it’s his game. I give him respect. I will change a few things and get it back at the end of this year.
After a “conservative” start, Kambosos landed a big right shot on Haney in the second round.
But very quickly, the American took over and asserted his boxing smarts with his impressive punch that lands continuously in Sunday’s world lightweight title fight at Melbourne’s Marvel Stadium.
In a game of cat and mouse, Haney’s speed was like never seen on Australian shores with the two men like cats on a tin roof.
“He’s growing with confidence,” Barry Michael said at the end of round three.
“The jab has Haney ahead at this point.”