Here is a google doc containing every team-season in our database since 1957, including the Head Coach and offensive & defensive coordinators. It also specifies those coaches' preferred offensive or defensive schemes (depending on which side of the ball they specialize in), and attempts to figure out the general offensive family (i.e. Air Coryell, Erhardt-Perkins, etc) each team-season fell into.
THIS IS BY NO MEANS COMPLETE. In fact, it's very much incomplete at this stage -- and that's where you come in. In the comments of this post, or in an email, we'd love to hear corrections and/or additions to the data, if you see an entry about which you know more than we do (and it's a good bet you do). Thanks in advance for your help, and hopefully we can assemble a more complete listing of teams' systems/schemes, which will let us do things like compute splits vs. a certain type of offense or defense, analyze whether 4-3 or 3-4 defenses were better in a given season, etc.
Today, we added a small new dataset to the site's Awards Section: All-Decade Teams. We have the official All-Decade Teams from the Pro Football Hall of Fame (and, in the case of the AFL, the AFL Hall of Fame) going back to the 1920s:
The Play Index is the name we use to refer to PFR's collection of top-notch research tools. Read below for more information on some of the applications we have made available to you, and also check out our blog posts about the Play Index. As always, if you have any suggestions or corrections please fill out our feedback form.
Every Monday, for the rest of the year, we'll be randomly selecting one twitter user who follows any three of our five Sports Reference Twitter accounts to receive a free Baseball-Reference.com Play Index account. If you are already a subscriber, we'll extend you for a year.
Sports Reference uses twitter to tweet out nuggets of information we find, notify users of new features, make occasional commercial messages, and generally enjoy ourselves. Here are the five Sports Reference twitter feeds: