MONSTER KNOCKOUT!!! Naoya Inoue vs Stephen Fulton Full Fight Highlights

Japanese icon Inoue became a four-division champion with a one-sided eight-round victory over WBC and WBO super bantamweight champion Stephen Fulton, before his adoring public in Tokyo on Tuesday.

After becoming the undisputed king at bantamweight with a win over Paul Butler last December, Inoue (25-0, 22 KOs) stepped up to 122 pounds to take on the similarly undefeated Fulton, who now slips to 21-1 (8 KOs).

Inoue was granted the expected hero's welcome and got to work with his sublime, powerful jab. The variety of his left lead was fundamental to the 30-year-old's dominance of the contest.

The champion had no response and his plan of trying to establish himself in centre ring quickly went up in smoke, with Inoue demonstrating his chilling power from both hands to the head and body as he opened up a wide lead on the scorecards.

Fulton is a skilled fighter but not one known for his knockout capabilities. After some fleeting success with a pair of right hands in round seven, he knew he needed to try and open up some more. It proved to be his undoing.

Fittingly, Inoue’s jab to the body laid the groundwork for a spectacular finish. Fulton folded slightly upon receiving the shot to the solar plexus, leaving him exposed to a brutal right hand to the jaw.

That left the American scrambled and defenceless for a signature Inoue left hook that dumped him on the canvas. The 29-year-old bravely got to his feet but had no response to the follow-up assault from the man many will now see as boxing's P4P king.