McCormack (8-1, 6 KOs) and Argentina’s Rios (11-2-1, 9 KOs) were set to meet on the Matchroom show headlined by George Liddard’s clash with Dario Morello at Copper Box Arena in London. DAZN would have streamed McCormack’s bout, but he has suffered what has been described as a “minor injury setback” and is now unavailable to fight.

The 31-year-old Sunderland native is not expected to be missing for long, with Matchroom already working on a new date for him to fight.

McCormack had been set to return following the first defeat of his career eight months ago. He was dramatically stopped by British underdog Conah Walker (18-3-1, 9 KOs) in the 12th round of their pulsating clash December 6 in Monte Carlo.

But this injury is the latest in a number of problems during what has been a stop-start career since he turned professional in March 2022.