Defensive Lineman Are the First Line of Defense The Makings of a Good Defensive Lineman. Good defensive linemen are big, strong and quick. ... Common Defensive Formations. The 4-3 defensive formation, most commonly used in the NFL, employs two defensive tackles and a defensive line of four men, with three linebackers behind them. Stellar Defensive Linemen. ...What are the defensive line positions in football?
The defensive positions in football can be grouped into three general categories: defensive linemen, linebackers and defensive backs. Defensive linemen generally are aligned the closest to the ball, along the line of scrimmage, as exemplified by the players in white jerseys in the photo below.