The first truly wild week in college football produced a shakeup in rankings of all types, including Bill Connelly’s SP+ rankings at ESPN.

Three teams that had less than a 15 percent chance of winning, per SP+, won: Illinois beat Wisconsin (8 percent), Vanderbilt beat Missouri (8 percent), and Georgia Tech beat Miami (13 percent).

Arkansas was among the biggest movers, as the Razorbacks dropped 13 spots to 88th following the 51-10 loss to Auburn.

The top three remain the same, though — Ohio State, Alabama, Oklahoma and the overall title hierarchy mostly survived, Connelly wrote.

What is SP+? In a single sentence, it’s a tempo- and opponent-adjusted measure of college football efficiency. Bill Connelly created the system at Football Outsiders in 2008, and as his experience with both college football and its stats has grown, he made quite a few tweaks to the system.

SP+ is intended to be predictive and forward-facing. That is important to remember. It is not a résumé ranking that gives credit for big wins or particularly brave scheduling — no good predictive system is. It is simply a measure of the most sustainable and predictable aspects of football. If you’re lucky or unimpressive in a win, your rating will probably fall. If you’re strong and unlucky in a loss, it will probably rise.

Here’s where every SEC program ranks:

2. Alabama
4. LSU
5. Georgia
10. Auburn
12. Florida
18. Missouri
25. Texas A&M
33. South Carolina
39. Mississippi State
48. Ole Miss
51. Tennessee
66. Kentucky
88. Arkansas
91. Vanderbilt