Bad news. Forrest Griffin is out of his upcoming fight against Antonio Rogerio Nogueira at UFC 114.

Forrest Griffin — one of the most popular fighters in the UFC — is backing out of his fight later this month because of a bum shoulder … TMZ has learned.

Sources tell us the former UFC light heavyweight champ’s shoulder injury is serious enough that he won’t be able to fight Lil’ Nog on May 29 in Las Vegas.

Several MMA media outlets have since confirmed the news. No word yet on who might replace Griffin on a few weeks notice or how long he will be out.

Image via Sherdog

Update: This will take the wind out of everyone’s sails who were hoping Jon Jones, or anyone interesting for that matter, would step in for Forrest Griffin at UFC 114. According to MMA Junkie, Jason Brilz will take on Antonio Rogerio Nogueira on May 29.

Mere hours after reports surfaced that the former light heavyweight champion had been forced out of his UFC 114 contest with Antonio Rogerio Nogueira (18-3 MMA, 1-0 UFC), ( has learned that Jason Brilz (18-2-1 MMA, 3-1 UFC) has agreed to take the fight on a little less than four-weeks’ notice.

Sources close to the promotion indicated that verbal agreements are in place and bout agreements are expected to be finalized shortly.

Brilz has earned wins over Tim Boetsch, Eric Schafer and Brad Morris in the UFC.