Jerome Mathis

I don't understand the move to sign Mathis when the Skins already have recently re-signed Rock Cartwright and also have Ladell Betts back to return kickoffs. They have Randle El to return punts. And they have James Thrash as a proven backup for both return spots. It would have made sense if the team had lost Cartwright to free agency but since they didn't, the Mathis signing is a head scratcher.