Keeping a quarterback upright is imperative in the NFL. Here`s who`s doing it better and worse than last year
(LA Times Dodgers)

It´s hard to make a definitive statement about a sack. There are lots of reasons why they happen, among them a lineman or back missing a block, the quarterback holding the ball too long or simply being immobile, receivers not getting open or a team falling behind, ditching its running game and...