Last week, Neil brought us the latest iteration of the Manning Index, showing which quarterbacks have overachieved in the playoffs relative to expectation (based off of the Vegas line). I’m going to do the same today for coaches. A couple of introductory notes:

Neil described the exact methodology in his quarterbacks post, so I won’t waste time repeating it. However, I wanted to look at coaches over an even longer period, and 1950 sounded like a good cut-off. ^[1]Note that coaches, like Paul Brown, who coached before 1950 are included, but their pre-1950 stats are not. Since we don’t have point-spread data for games from 1950 to 1977 ^[2]One other piece of fine print: for the Super Bowls, I used the actual Vegas lines, since those are readily available., I simply used the projected point spread based on the differential between each team’s SRS ratings and by awarding the home team three points. So for pre-1977 games, coaches are credited with wins over expectation based on the SRS, and for post-1977, for wins over expectation based on the Vegas line. Here are the results.
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