Redskins release WR Devin Thomas

ASHBURN, Va. -- The Washington Redskins on Saturday released receiver Devin Thomas, a 2008 second-round draft pick who failed to impress coach Mike Shanahan.

Thomas was replaced on the roster by running back Keiland Williams, who was promoted from the practice squad for Sunday's game against the Green Bay Packers.

Thomas was one of three pass-catchers taken in the second round two years ago in what has turned out to be an extremely disappointing draft by then-front office head Vinny Cerrato.

Thomas had trouble running routes correctly and was dogged by questions about work ethic; receiver Malcolm Kelly hasn't been able to stay healthy and is on injured reserve; and tight end Fred Davis is stuck behind Chris Cooley.

This year, Thomas couldn't make inroads despite a wide open No. 2 receiver competition that still hasn't been adequately filled. Offensive coordinator Kyle Shanahan said recently that Thomas needed to take a more professional approach to practice to earn playing time on offense.

Thomas has no catches this season but he had 12 kickoff returns for a 28-yard average.

Williams was promoted because the Redskins were down to two healthy running backs -- Ryan Torain and Chad Simpson -- after Clinton Portis was injured in last week's game. Portis hurt his left groin and is out four to six weeks.