Urijah Faber, left, trades punches with Dominick Cruz during the first round of their UFC bantamweight mixed martial arts title match, Saturday at The MGM Grand Garden Arena in Las Vegas.Eric Jamison/The Associated Press
Bantamweight champion Dominick Cruz has dropped out of his UFC 148 matchup with Urijah (The California Kid) Faber because of a knee injury.
The UFC says Cruz has a torn anterior cruciate ligament.
"It's true Cruz blew his ACL. Stay tuned for more info," UFC president Dana White tweeted.
The July 7 fight in Las Vegas was to have been the third between the two rivals, with each holding a win.
"Im bummed people, Thanx 4 the support as i battle this,big sorry to all the fans out there! I WILL recover n I WILL b back 2put on a show!" tweeted Cruz.
Said Faber: "It sucks for everybody. ... I'm ready to scrap July 7."
The two 135-pounders are currently serving as coaches on "The Ultimate Fighter Live."
The UFC 148 main event pits middeweight champion against Chael Sonnen