The Browns are dealing with a banged up defensive backfield as they began preparations for Sunday’s game at Oakland. Starting safety Brodney Pool missed practice on Wednesday as he continues to deal with the after effects of a concussion suffered last weekend against Cincinnati. Mike Adams, who replaced Pool, was also out on Wednesday because of a sore wrist. Starting cornerback Leigh Bodden also was out yesterday as he continues to deal with a sore groin and outside linebacker Antwan Peek has a sprained foot.