Naoya Inoue vs. Stephen Fulton fight results, highlights: 'The Monster' overwhelms to score TKO, earn titles

Inoue put on a clinic in his fourth weightclass to claim the WBC and WBO super bantamweight titles on Tuesday

For as great as Naoya Inoue has been throughout his run as three-division champion, Tuesday morning's destruction of unified 122-pound champion Stephen Fulton Jr. just placed him into a whole different stratosphere. 

Inoue (25-0, 22 KOs), the reigning pound-for-pound king, scored the most emphatic victory of his increasingly legendary career by becoming a world champion in a fourth division following an eighth-round TKO of Fulton (21-1, 8 KOs) to commandeer the WBC and WBO super bantamweight titles. 

The 30-year-old Inoue dominated from start to finish in front of his adoring home crowd inside Tokyo's Ariake Arena. But it was the ease in which he systematically demolished Fulton, among the most well-rounded champions in the sport, that turned boxing's current P4P debate into anything but, even as the sport awaits Saturday's Errol Spence Jr.-Terence Crawford showdown for the undisputed welterweight title.