by Ken Pishna – MMAWeekly.com (Reporting by Damon Martin)
With Tyson Griffin forced to withdraw from his UFC 108 bout with Jim Miller due to an undisclosed injury on Friday, the UFC moved swiftly to bolster a fight card that has been plagued by injuries.

Within hours, Miller received a new opponent, Sean Sherk.

Sherk was originally slated to face Rafaello Oliveira in a preliminary bout. But with holes appearing almost daily on the pay-per-view portion of the fight card, Sherk was called up to face Miller on the main card.

Miller (15-2) is coming off back-to-back wins over Steve Lopez and Ultimate Fighter winner Mac Danzig. His only slip in the Octagon has been to Gray Maynard at UFC 96. He is 4-1 in the UFC, trying to work his way into title contention.

Sherk (33-4-1) is a former UFC lightweight champion. He lost to current champion B.J. Penn in an attempt to reclaim the title at UFC 84. He rebounded with a decision win over Tyson Griffin before stumbling against Frankie Edgar at UFC 98, his last action in the Octagon.

After losing three proposed main events bouts, UFC 108 features a headline bout between former UFC light heavyweight champion Rashad Evans and Brazilian Thiago Silva.

Oliveira is expected to remain on the preliminary card to face a new opponent.