The Colts have signed running back Dion Lewis, a league source tells Rand Getlin of Yahoo Sports (via Twitter). Lewis, who last played for the Browns, gets a two-year deal with Indianapolis (link). The Colts have the powerful Trent Richardson at the top of their running back depth chart with veteran Ahmad Bradshaw in support and Lewis adds a little bit more talent and depth to the backfield.
Meanwhile, the Colts also picked up outside linebacker Chris Carter, who has played in 29 games and made four starts for the Steelers, according to Mike Chappell of ESPN.com (on Twitter). In related moves, running back Zurlon Tipton has been waived and quarterback Jeff Matthews has been dropped from the practice squad (Twitter links). Meanwhile, quarterback Dominique Davis will join the Colts’ taxi squad and linebacker Cam Johnson will head to the IR with a triceps injury.