Forrest Griffin Injures Knee, out of UFC 155 Fight with Phil Davis

Another fighter, another knee injury. This time, former light heavyweight champ Forrest Griffin is pulling up lame.

Dana White said via Twitter:

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Forrest Has MCL tear and ACL strain. 20 cc's of blood removed from his knee and the saga continues at the UFC!!

— Dana White (@danawhite) December 5, 2012

"

Forrest Griffin was scheduled to face up-and-coming wrestler Phil Davis at UFC 155 on December 29. With the event three-and-a-half weeks away and given the severity of the injury, it is unlikely Griffin will be able recover in time for the fight.

This is another hard hit to the UFC 155 card, which has already been smacked by injuries.

Chris Weidman, who was originally set to face Tim Boetsch, pulled out of his fight with a shoulder injury and was replaced by Costa Philippou. A fight between Joe Lauzon and Gray Maynard also had to be tweaked after Maynard suffered a knee injury of his own. He was then replaced by Jim Miller.

Griffin was originally scheduled to face former middleweight title contender Chael Sonnen in his return to 205 pounds. This was changed when Sonnen and Jon Jones were set up to become the centerpieces of the upcoming season of The Ultimate Fighter. Davis replaced Sonnen but now finds himself without an opponent.

UFC 155 is still a compelling night of fights, topped with a heavyweight title fight (that has, thankfully, not been marred by injury) in Junior dos Santos vs. Cain Velasquez.

No word yet on who could replace Griffin or if the fight will be canceled. Keep an eye on Bleacher Report as the story develops.

Update: Multiple sources are confirming that Griffin is off the UFC 155 card.