Fulton (23-2, 8 KOs) struggled cutting weight during the week and left it too late to make the contracted 130-pound limit as planned, originally sanctioned as a WBA junior lightweight title eliminator.

Wilson (18-3, 10 KOs) agreed to a 133-pound catchweight, though the 30-year-old's team was naturally unhappy upon discovering the American had missed that by a considerable margin before Saturday's ceremonial weigh-ins.

In a video on the promotional company's YouTube channel, Wilson's camp was displeased with the outcome and voiced their frustrations.

"This fight was agreed. Twelve rounds at 130 pounds. He rolls in today at 139. We all know what Liam would say, but that's not the point," said Wilson's coach Ben Harrington.

"I have the responsibility to look after Liam and his family, but this isn't it. About 140 pounds, supposed to be 133, he had no intentions of making it. No effort at all."

The former two-division world champion insisted there was no foul play, having missed weight for the second consecutive appearance after coming in at 132 pounds for an originally planned world title shot against WBC titleholder O'Shaquie Foster on December 6.

The Philadelphian later apologized on social media, though there's a sense of injustice that Wilson will miss out on a great opportunity and Fulton's ill-prepared nature — starting the weight cut late and not arriving in good time to acclimate — served to nix one of the better fights of a busy weekend worldwide.

A spokesman for the promotional company declared Fulton unprofessional. That frustration was echoed by the former world title challenger's manager, Glenn Jennings.

"This feels like an absolute stitch up. We sign a contract at 130, there's an expectation you will deliver. It's totally unacceptable and a blight on the sport. This is unprofessional. There's nowhere to go for this bloke now."

The latest development was confirmed by No Limit in a short press release, confirming Sydney southpaw Paulo Aokuso (10-0, 5 KOs) will be upgraded to the Errol Spence-Tim Tszyu main card.

He will box for an IBF light heavyweight trinket title in a scheduled 10-rounder against Luis Tejeda (12-0-1, 9 KOs).

CODE Sports has reported a short-notice heavyweight bout could join Sunday's undercard, but nothing was confirmed as of Friday night ET.

Fulton-Wilson falling off the card is the second co-main event fight to be shelved in a week, after two-weight world champion Jermall Charlo was denied a visa before his proposed return against Koen Mazoudier.

Mazoudier (15-4-1, 6 KOs) is hopeful of a return as part of the Nikita Tszyu-Ben Mahoney bill on August 26.