Quote:For decades, old-school thinkers like Parcells and former Colts president Bill Polian considered quarterback, left tackle and pass rusher to be the "holy trinity" of team building. Now the argument can be made that the correlation between victories and elite left tackles no longer exists. "When coaches talk about position hierarchy, left tackle isn't among the top few anymore," an AFC team exec says. "Now it's QB, pass rusher, cornerback, wide receiver. A guy like Joe Thomas shows that a great left tackle isn't nearly sufficient."


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Meanwhile, to counter quick-strike passing attacks, defenses like the Giants' and Ravens' have started to take a shorter, more direct path to the quarterback by overloading pressure up the middle, which places more value on guards and centers.


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In the end, the importance of protecting the quarterback hasn't diminished; it's just that the responsibility and rewards are now more evenly distributed across all five O-linemen. "It used to be you found a great left tackle and built the rest of it from there," Savage says. "Now, because of defenses, you'd better be solid across the entire line. Instead of the super-elite left tackle, it's about five men who block well in a system. You could write a whole book about how the spread offense has impacted the NFL game."