British former world title challenger Craig Richards will take on Radivoje Kalajdzic in a 10-round light heavyweight showdown, while Lee Cutler faces Louis Greene in a middleweight clash, on Zuffa Boxing's Johnny Fisher bill at London's Copper Box Arena on September 26.

Richards vs Kalajdzic serves as chief support to Fisher's heavyweight main event. Richards (20-4-1, 13 KOs) fought Dmitry Bivol for the WBA title in 2021 and has won his last two fights, including a knockout over Dan Azeez. Kalajdzic (30-3, 22 KOs) fights outside North America for the first time after stopping Oleksandr Gvozdyk in February.

The Copper Box Arena bill also features a 10-round middleweight bout between Cutler and Greene. Cutler beat Stevie Mc Kenna in December 2024; Greene, a former Commonwealth super-welterweight champion, won a points decision over Daniel Buciuc. Decorated British amateur Kayla Allen also makes her professional debut after becoming Zuffa's first female signee. Alex Mac Millan, Leon Hughes and Fred Pullen are also on the card.