Morris Claiborne (illness) misses practice

IRVING, Texas -- Rookie cornerback Morris Claiborne missed Thursday's practice due to an illness.

Punters Chris Jones (knee) and Brian Moorman (groin) both were unable to practice, prompting the Cowboys to schedule workouts with three free agent punters.

Center Ryan Cook (hamstring) dressed, but he also did not practice.

Outside linebacker Anthony Spencer, who did not play against the Bears in the Monday night loss before the bye because of a pectoral injury, was a limited participant in the practice. Spencer said he expects to play Sunday against the Ravens.

Star defensive lineman Haloti Ngata is the only Baltimore player who was not a full participant in the Ravens' practice. Ngata was limited due to a shoulder injury.