The fundamental essence of the position is tackling. If you can’t tackle, you can’t play and in these guys’ case, you must have the strength, toughness and demeanor to step up and challenge the gap, tackle to tackle. Stopping the run is where defensive football begins and ends. When we look at the below players, these are all guys who relish contact and can anchor at the point of attack when challenged in a phone booth. You must be able to shed, scrape and pursue with angles and have a relentless motor.