What makes a Top 25 team special? Here's a look at the strengths of each of these talented rosters.
1. Alabama: Running back
Even before back-to-back 1,000-yard rusher Damien Harris decided to return for his senior season, Alabama was stocked at running back with young up-and-comers Najee Harris, Brian Robinson Jr. and Josh Jacobs all returning. Now Harris will lead as deep a group as any in the SEC. -- Alex Scarborough
2. Clemson: Defensive line
This is a no-brainer: The Tigers return the best defensive line in the country, and its potential has left opposing coaches wondering how, exactly, they will move what appears to be an immovable force.