2017 NFL Draft Big Board: SI's top 40 prospects

Who’s No. 1? Even in a year when the answer to that question isn’t quite as unknown, trying to determine who will be picked first in the 2017 NFL draft is full of drama and speculation. In the lead-up to the draft, we’re counting down the top 40 prospects on our Big Board, complete with in-depth scouting reports that examine the strengths and weaknesses of their games and the NFL players that teams may see flashes of when they put on the tape themselves.

Kicking off this year’s countdown: a versatile interior lineman who has excelled everywhere he’s played, a sack master who could be the next Bruce Irvin and a mobile offensive tackle who could be a 25-year-old NFL rookie.