Brian Norman Jr's career-toughest test against Devin Haney in November will likely decide the welterweight division's trajectory.

Georgia's Norman (28-0, 22 KOs, 2 NC) is an in-form defending champion bullish that he'll depart the Saudi Arabian capital city of Riyadh with another impressive defence under his belt but incoming divisional debutant Haney (32-0, 15 KOs, 1 NC) has other ideas.

Regardless of who wins their WBO welterweight title matchup as part of a stacked Ring IV bill come November 22, the unbeaten emerging victor is largely expected to clean up the rest of the belts in an ever-changing 147-pound division with beatable champions.

San Antonio's Mario Barrios (29-2-2, 18 KOs) has drawn his last two appearances against Abel Ramos and a returning Hall of Famer in Manny Pacquiao, while Rolando Romero (17-2, 13 KOs) was elevated from 'Regular' champion after Ennis vacated his unified titles.

Lewis Crocker's narrow 12-round split decision win over Paddy Donovan in their rematch this month has merely amplified a belief that, if you're good enough, the current champions are there for the taking.

Crocker (22-0, 11 KOs) was handily losing their first bout before Donovan was disqualified for landing a shot after the bell, while logging two knockdowns in a more disciplined display was still only enough on two scorecards to edge past his fellow Irishman.

Former IBF junior welterweight titleholder Paro (27-1, 16 KOs) is one of three former champions who've moved up from lower weight divisions, alongside Haney and Pacquiao, to be currently ranked in the world's top-15 among the four major sanctioning bodies.

His gritty title eliminator win over No. 8-rated Papot will boost him in next month's IBF rankings update, though Crocker's promoter Eddie Hearn intimated the week prior that he would need at least one more win before being called as the mandatory challenger.

While showing respect for Crocker's changed gameplan, the Mackay southpaw remains confident he'd beat the new champion when his time does come.

He told BoxingScene: "The first [fight] was very dominant in Donovan's favour, so you've got to respect Crocker and his team for coming up with that [gameplan], executing it, catching and putting him on the canvas numerous times. It was a good fight, but I'm confident I can get Crocker when my opportunity arises. I've just got to keep winning."

Whether it's the IBF or another sanctioning body, Paro (#5 WBO) isn't bothered by what he cannot change. Naturally, he fancies himself against them all.

No Limit CEO George Rose has revealed they're in preliminary discussions with both Romero and Barrios over a potential 2026 matchup, aware Paro has previously sparred the former on several occasions in Las Vegas and they share a friendly respect for one another.

“I’ve shared the ring with Rolly and we have a mutual respect - both of us know the other can fight, I’d actually say we’re mates - but I’d love to take his belt. Anyone with a belt, I want them and a fight between us absolutely makes sense,” the 29-year-old told Fox Sports Australia after his gutsy 12-round decision win over David Papot last week.