Junior welterweight prospect Frankie Gomez (15-0, 11 KOs), who is just 21, was scheduled to face former titleholder (and now division gatekeeper) DeMarcus "Chop Chop" Corley (39-20-1, 23 KOs) of Washington, D.C., on Saturday (FSN/Fox Deportes) at the Fantasy Springs Resort Casino in Indio, Calif.
However, Gomez suffered a deep bruise in his left knee and will be sidelined for a month, Golden Boy matchmaker Eric Gomez told ESPN.com.
"He can begin sparring right after that," said Gomez, who is not related to the fighter.
Eric Gomez said he hopes to reschedule the fight with Corley, who would be the most notable opponent so far for the prospect and former amateur standout.
The original co-feature of junior featherweight prospect Randy Caballero (18-0, 10 KOs) against Puerto Rico's Miguel Robles (12-2-2, 5 KOs) has been moved up to the main event. Caballero was the draw of the card in the first place. He is from Coachella, Calif., and the crowd favorite at Fantasy Springs, where he has fought 11 of his 18 professional fights.
Also on the card will be a trio of 2012 U.S. Olympians: welterweight Errol Spence Jr., junior featherweight Joseph Diaz and middleweight Terrell Gausha.