After having xrays and mri's done on his knee after the loss to Denver , team officials all said , Casey will not need surgery to repair his ACL . Now today , Casey is going under the knife to have his ACL repaired . That does'nt bode well for a guy who will be 35 years old before the 2012 season starts . In addition , it really hurts the teams defense because the only other nose tackle on the roster is second stringer Steve McClendon . The team now is going to either draft a nose tackle or bring someone in during free agency . The question I have is , why the delay ? This should have been diagnosed two weeks ago after the playoff loss and it wasnt . If I'm Mike Tomlin , I'm having some serious discussions with my team doctor .