Devin Haney was willing to step up and fly to Australia to battle George Kambosos Jr. for the undisputed lightweight championship on Saturday night.

That proved to be a very profitable decision for Haney as he dominated Kambosos across 12 rounds to win all four world championships at 135 pounds.

Haney becomes just the ninth fighter to unify all four recognized titles in any weight class and the second youngest at just 23.

There was very little drama in the bout, with Haney immediately establishing a brilliant jab that kept Kambosos from ever getting his offense going.

As the jab landed, Haney fired lead left hooks and straight right hands behind it, each shot discouraging Kambosos from letting go with the right hand he seemed to have loaded up the entire night.

In the end, Haney picked up the unanimous decision victory with the official scorecards reading 116-112, 116-112 and 118-110.

After a rocky build to the fight that saw Kambosos frequently use trash talk, Haney's father arrive the night before the fight and Kambosos miss weight on his first attempt,

Haney was calm from the jump, looking every bit a masterful boxer as he completely shut down Kambosos and marked up the Aussie's face with a steady diet of jabs.

Kambosos will have the opportunity for revenge as the fight with Haney included a rematch clause that also stated Haney would have to return to Australia should he win the first go-round.

Kambosos made it clear that he did have every intention of activating that clause when speaking after the fight.