Depth is an asset too often overlooked in today's NFL.
Having one great option at any given position is nice, but being able to accumulate solid players behind that player is necessary to win consistently.
Simply look at the 2011 Indianapolis Colts for an example.
When Peyton Manning was lost for the season due to injury the team made a rash decision to bring in a retired Kerry Collins because they were not comfortable with the back-ups already in place.
This kind of scenario is a scary reality for some teams.
However, the following ten units should ensure no such doomsday occurs for their respective organizations.