A few undrafted free agents make a strong impact each season in pro football.
And the 2013 NFL draft is no exception.
Just look at Vontaze Burfict's impact for the Cincinnati Bengals in 2012. That's proof anyone can succeed when given an opportunity.
As for this draft season, one guy we'll check out ahead is Vanderbilt running back Zac Stacy.
Stacy is a compact ball-carrier capable of slamming inside the trenches or slicing off tackle to get outside. He's also laterally agile and presents the athleticism to bounce around the edge, get upfield and force a defense to gang tackle.
Plus, he accumulates solid yards after contact and is a reliable checkdown option.
As previously mentioned, not many undrafted free agents who enter the league immediately dominate. But there are those capable of becoming gems that slip through the actual draft.