Another UFC main event falls apart (updated)

Dana White on Twitter wrote that Shane Carwin blew his knee out and is off the 12/15 show in Las Vegas and they are searching for a new opponent for Roy Nelson.

Carwin suffered a knee injury several weeks back in training and it was considered possible he would have to pull out. 

White said this was a new injury.

Who is the next UFC champion to lose the title?


Who do you expect to win this fight?