Roach (concussion) was a limited participant in Wednesday's practice. As of last Friday, Roach had not been fully cleared from his concussion, and his limited designation Wednesday suggests that's still the case. However, Roach, who suffered the concussion late in the preseason, has been able to practice on a limited basis for more than two weeks now, and if he does receive full clearance prior to Friday, he could end up spelling Miles Burris at middle linebacker Sunday against Miami.