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.

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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."

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The UFC 148 main event pits middeweight champion against Chael Sonnen