The Colts made a surprising move Sunday by listing running back Trent Richardson as inactive for the team's divisional playoff game at Denver. Richardson was not on the team's injury report.
There was plenty of speculation heading into Sunday's game about Richardson's role on offense after he appeared for just one snap during a wild-card win over Bengals last week. Richardson had started 12 games at running back for Indianapolis during the regular season.
Zurlon Tipton and Michael Hill, who was signed Tuesday, will be the Colts' backup running backs behind Daniel Herron on Sunday.