Shane Carwin has suffered a knee injury and will not be fighting Roy Nelson at the UFC Ultimate Fighter 16 Finale, the two were coaches on the show. There is no word yet on who will be replacing Carwin, but an fighter is being sought by the Ultimate Fighting Championships. Nelson has won two of his last three in UFC competition, most notably defeating Mirko Cro Cop at UFC 137. UFC Ultimate Fighter 16 Finale takes place on December 15th at The Joint At The Hard Rock Hotel & Casino in Las Vegas, Nevada with Roy Nelson headlining.