Despite adding a number of players recently, the Colts still have some problems defensively. According to Gregg Rosenthal from NFL.com, Robert Mathis has been suspended for four games for violating the league's performance-enhancing drug policy. Mathis claims that the suspension was due to a drug that was supposed to help with fertility, but regardless, the Colts will need to find someone else to rush the passer.
With Mathis potentially gone for a quarter of the season, the Colts will need other veterans to step up on both sides of the ball. If these veterans don't step up soon, there are backups that could be looking to take their starting spots.