thiagoA rematch between highly-ranked UFC welterweights Jon Fitch and Thiago Alves planned for UFC 107 on Dec. 12 in Memphis, Tenn. will not take place as scheduled, has learned.

Five Ounces of Pain was informed early Friday morning that Alves was forced to withdraw from the fight due to an unspecified injury and that discussions to secure a replacement have already begun.

The news of Alves falling off the card comes as yet another blow to the UFC’s plans for UFC 107, as season 10 coaches of The Ultimate Fighter Rashad Evans and Quinton “Rampage” Jackson had originally been rumored to headline the event.

However, plans for Evans vs. Jackson were scuttled after Jackson accepted a role in the upcoming A-Team film adaptation. UFC officials quickly moved to transfer a planned lightweight title fight between B.J. Penn and Diego Sanchez to headline its Dec. 12 pay-per-view event and the rematch between Fitch and Alves was added soon after to augment the card’s depth.

Alves, 16-6, has not fought since losing a unanimous decision to current UFC welterweight champion Georges St. Pierre this past June at UFC 100. Prior to the title fight, Alves had won seven consecutive bouts in the UFC.

Meanwhile, Fitch, also a former UFC welterweight title challenger, is 19-3 overall and has won two consecutive bouts following his title loss to St. Pierre at UFC 87 in August of 2008.