Reserve running back Brian Calhoun was doing a decent job returning kickoffs (10 returns, 221 yards) until he blew out his knee which will cause him to miss the rest of the season.  With that in mind, Troy Walters will take over for Calhoun and he has returned 1 kickoff for 29 yards this season.  He also is the punt returner for the Lions and he has done a good job returning 8 punts for 80 yards (10.0 avg).