What are the best QB situations in college football?

Sam Darnold had a breakout performance at the Rose Bowl. Sean M. Haffey/Getty Images

Editor's note: This article was adapted from Phil Steele's college football preview magazine, which is available here.

Can Sam Darnold follow up his performance in the Rose Bowl with a memorable 2017 season? How will Lamar Jackson follow up his Heisman Trophy-winning sophomore season? Which team has the best quarterback unit in the country?

Here's how the nation's top 55 quarterback situations break down: