ASHBURN, Va. -- Washington Redskins tight end Chris Cooley and defensive end Phillip Daniels missed practice Wednesday, but coach Jim Zorn expects both to play against the Pittsburgh Steelers on Saturday night.

Cooley had spasms in his lower back, and Daniels was rested after having fluid drained from his left knee. Daniels injured the knee on the first day of training camp a year ago and missed the entire season.

Mike Williams, who's trying to make a comeback, sprained an ankle, and Zorn said the offensive lineman will miss practice Thursday, too.

Second-year offensive tackle Devin Clark left practice with a sore knee.