Shane Carwin pulls out of UFC 125 bout

UFC heavyweight contender Shane Carwin (12-1 MMA, 4-1 UFC) announced Tuesday that he is pulling out of his scheduled bout at UFC 125 against Roy Nelson (15-5 MMA, 2-1 UFC), due to back problems.

Bad news for fans looking to see the man that nearly put away Brock Lesnar last July at UFC 116.

A rumored replacement for the co-main event is Frank Mir. Mirko Cro Cop also chimed in, but anyone that saw UFC 119 will not want him fighting again. 

UFC 125 features UFC Lightweight Champion Frankie Edgar defending his title against Gray Maynard. 

Here is Carwin's statement via his site and Twitter

I am going to pull out of the fight with Roy Nelson. As many of you know I have been having some back pain. I had an MRI yesterday and I have some damage that may really require surgery. If the doctors do not have to perform surgery then I will be out 8-12 weeks. If they do have to perform surgery I do not know how long I will be out of action.

I was really looking forward to fighting again and obviously this is a very disappointing turn of events. My manager said "You can't fight the best fighters in the world with just heart, it is time to stop limping to the top of the mountain and get healthy so you can climb it on your terms." I have been up all night thinking about this decision and what I may be missing by making it.

In the end my family and manager are right. I owe myself, I owe my fans the best show I can give them. I need to get healthy. I am going to be speaking with the surgeon this week about the surgery. My thoughts are if the surgery fixes it why add 8-12 weeks of physical therapy, epidurals and traction if surgery may still be needed.