The are the first team since the 1969-71 to lead the NFL in scoring defense for three consecutive seasons, bolstering defensive end 's claim that Seattle is now home to best defense "."What is behind the succe s that has the ' pre s man, Cover Three defense with Pittsburgh's Steel Curtain, the mid-1980s and the 2000 as the most dominant in NFL history?For starters, coach Pete Carroll and general manager John Schneider have constructed a roster uncommon for its depth of talent in the face of free agency and a Allen Robinson Jersey salary cap."On defense we go 13, 14, 15 deep," outside linebacker told on Wednesday. "Our twos and threes can be starters somewhere else."What separates the from other great defenses of their era is their cadre of at least 10 players with the demonstrated ability to take over a game.In cornerback , free safety , box safety and middle linebacker , Seattle has the luxury of four All-Pros commonly viewed as the modern prototypes for their respective positions. All four boast Defensive Player of the Year potential."Me, Earl, Kam ... Dick Butkus Jersey we're not just three All-Pro players," Sherman crowed last year. "We're ."Their film study, knowledge of route concepts and command of situational football enables them to play at a faster speed than opposing offenses.Beyond that impre sive nucleus, Dan Quinn's defense features another half-dozen disruptive influences. XLVIII MVP and pa s rusher keyed the shutdown of 's record-breaking offense a year ago.Defensive tackle is a five-time All-Pro. is one of the league's premier coverage linebackers. 's led to the dismantling of Chip Kelly's vaunted offense in Week 14. Irvin has been a terror coming off the Walter Payton Jersey edge over the past month, finally realizing Akiem Hicks Jersey his first-round talent.In an era that threatens the extinction of padded practices, the are one of the few teams still built on sheer physicality, leaving their .That bruising physicality works hand-in-glove with a mastery of fundamentals that results in the league's surest tackling, via a strike zone from the shoulders to knees.This swarming unit is exceptionally well-coached."Just like pitchers throw their fastballs in the strike zone absolutely as hard as they can," Quinn said Thursday, "we're trying to hit somebody in the strike zone absolutely as hard as we can."In the age of the pa sing revolution with rule changes favoring the offense, the are a reminder that football's e sence is hitting."They won a last year," NFL Media analyst Mike Mayock recently explained, "because their defense was than any offense they played in the playoffs."If the "" captures a second straight Lombardi Trophy, Richard Dent Jersey Bennett won't be alone in his opinion that this is the best defense ever to put cleats on the ground.The latest Podcast and breaks down the storylines nobody is talking about. Find more content on .