0 of 10

Defining the phrase “biggest role” when it comes to rookies in the NFL isn’t an easy task. At least, it’s not as cut and dried as one would think.

By the most common definition, “biggest role” would be the person who touched the football the most or did the most with it. That would be a quarterback. Last year it would have been very easy to include quarterbacks on this list. The Indianapolis Colts' Andrew Luck was a shoo-in to be an impact rookie, as was Robert Griffin III for the Washington Redskins.

But this is 2013—and even though Buffalo Bills rookie quarterback EJ Manuel might get a lot of touches during his first season, he’s not going to play the role Luck and Griffin did in 2012.

See the conundrum I’m dealing with here?

Predicting guys for the “biggest role” isn’t easy, especially this season. I found 10 guys I believe will shine, and not one is a quarterback. Only one was drafted in the first round, one wasn't picked until Day 3 of the NFL draft and one wasn’t even drafted at all.