How strong is the relationship between offensive line play and team strength?

In recent years, the Seattle Seahawks have had a notoriously poor offensive line. In the past 5 years, Pro Football Focus (PFF) has ranked their line as 20, 27, 19, 30, and 32 out of the 32 teams in the league. At the same time, the team finished #1 in Football Outsiders’ DVOA metric in 4 of those 5 years, and #9 in the other year. On the other hand, there are the Cleveland Browns, whose line has been a consistent strength of the team.…

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Statistically Speaking: Bob Waterfield

This is the second installment of the Statistically Speaking series, in which we look at the statistical profile of the NFL’s legendary quarterbacks. The first player covered was Slingin’ Sammy Baugh, the game’s first real superstar passer. Today’s player, Bob Waterfield, was much like Baugh in many respects. Like Baugh, Waterfield was a star passer with box office appeal. Also like Baugh, Waterfield was a gifted kicker and punter, and a respected defender. To top it off, Waterfield, like Baugh, joined a team with limited…

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