The middleweight bout between Darren Till and Jack Hermansson is off again.
Till is out of his UFC London co-main event fight against Hermansson on July 23 due to an undisclosed injury, sources told ESPN's Marc Raimondi.
Veteran Chris Curtis is stepping in to fight Hermansson as Till's replacement, a UFC official told Raimondi.
The UFC initially booked Till and Hermansson to meet in a main-event bout in December 2020 but an injury also forced Till to withdraw.
Till hasn't fought in 2022 yet. The 29-year-old's last appearance was in September 2021 when he suffered a submission loss to Derek Brunson. Till revealed afterward he sustained a torn ACL during his training camp for that fight. The ninth-ranked middleweight has lost four of his past five fights, including the last two.
Hermansson, the No. 8-ranked middleweight, suffered a split-decision defeat to Sean Strickland in his last Octagon outing in February. The 34-year-old is 1-2 in his last three fights.
Meanwhile, Curtis has won all three fights since joining the UFC. The 34-year-old last beat Rodolfo Vieira by unanimous decision in June.
The UFC London card is headlined by a heavyweight bout between Curtis Blaydes and Tom Aspinall.