... requires more than just one star player.

Ray Lewis may be the best linebacker of this generation, but even he's not going to slice up NFL offenses without the help of the 10 other men on the field wearing the same uniform as him.

Even that probably doesn't go far enough. Everyone from the backups to the coaches to the front office guys must work together to build a successful team.

But some aspects of play can be broken down to a unit of players within an offense or defense. Groups of starters, backups, special teams guys who will bring a new intensity to practice—a unit can almost be a team unto itself.

Some units are just a player or two away from being championship-caliber, but some need to be rebuilt from the gr...

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