Cameron was at the peak of her powers when she beat Katie Taylor by majority decision in Dublin in May 2023, handing the Irish superstar the first professional defeat of her career.
Taylor avenged that loss five months later, but Cameron’s career subsequently stalled somewhat as she struggled to secure the biggest fights.
She has now reignited it under Most Valuable Promotions, co-owned by Jake Paul and Nakisa Bidarian, becoming a two-weight world champion when she beat Michaela Kotaskova for the vacant WBO light-middleweight title in April.
Now, Cameron, 22-1 (8 KOs), has the chance to prove she remains one of the very best fighters in the world against Mayer. The American, 22-2 (5 KOs), is a three-division world champion and is fighting for the first time under MVP.
The winner will hold three of the four major belts in the division, with Oshae Jones currently holding the IBF title. Cameron knows exactly what it takes to become undisputed, having unified the light-welterweight division in 2022.
Londoner Caroline Dubois is another British star who has flourished since joining MVP, beating Harper in April to become unified champion.
Dubois is now 13-0-1 (5 KOs), while American challenger Amelia Moore enters the fight unbeaten at 4-0 (1 KO).
Dubois is a heavy favourite and is targeting IBF champion Elif Nur Turhan and WBA champion Stephanie Han as she looks to complete the lightweight undisputed puzzle, while a budding rivalry with American Alycia Baumgardner could eventually produce a blockbuster showdown.