Though no official word has been announced by UFC.com, the popular celebrity entertainment website TMZ.com has reported that Forrest Griffin will be backing out of his upcoming fight against Antonio Rogerio Nogueira at UFC 114, due to a shoulder injury which occurred during training.

Griffin vs. Nogueira was set to be the co-main event at UFC 114, scheduled to take place right before the main event grudge match between Quinton "Rampage" Jackson and Rashad Evans.

While the severity of Griffin's injury is still unclear, there have been rumors that Nogueira will still fight against a replacement opponent.

As the injury itself is still unclear, so is the length of time that Griffin will remain inactive.

Griffin was coming off of a split decision win over Tito Ortiz at UFC 106 in November of 2009.