Mikaela Mayer and Chantelle Cameron clashed physically and verbally at their final weigh-in before Saturday’s light-middleweight unification fight in Birmingham, turning an initially cordial build-up into a tense confrontation. The incident underlined the rivalry ahead of a significant title bout between Mayer, the WBA and WBC champion, and Cameron, who holds the WBO belt.

Both fighters weighed in 6lb below the 10st 8lb light-middleweight limit. Cameron has won 22 of 23 professional bouts, with her only loss coming against Katie Taylor, while three-weight world champion Mayer has 22 wins in 24 fights; Caroline Dubois and Amelia Moore also exchanged tense words before their lightweight co-main event.