#DearAndy: Explaining defensive line techniquesSports Illustrated's Andy Staples breaks down the numbering system for defensive line positions.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceSports Illustrated's Andy Staples breaks down the numbering system for defensive line positions.Loading recommendations... Please wait while we load personalized content recommendationsPublished Apr 15, 2015 | Modified Apr 15, 2015SI STAFFShare on FacebookShare on XHome/College