ESPN NFL Football Power Index rankings for Sept. 22

The Packers' Randall Cobb evades Earl Thomas on Sunday night in Green Bay. Maddie Meyer/Getty Images

Here are the ESPN Football Power Index rankings for Sept. 22, now that Week 2 of the season is completed. For a full explanation on how the FPI is put together, please read this explainer. For more background, you can also read this Q&A with the developers of the FPI.

A few notes heading into Week 3:

The top three teams after Week 1 remained in those positions after Week 2. The Green Bay Packers (+6.0) stayed at No. 1 after beating the No. 3 Seattle Seahawks (+4.4), and the New England Patriots (+4.8) stayed at No. 2. As a reminder, FPI measures a team’s predictive strength looking to the future.

The Pittsburgh Steelers (up six spots to No. 4) and the Arizona Cardinals (up seven spots to No. 5) made the most upward movement after Week 2.

The Dallas Cowboys, who lost quarterback Tony Romo for several weeks with a broken clavicle, dropped nine spots to No. 17. (FPI takes into account each team’s quarterback situation.)

At the bottom of the FPI rankings, the Chicago Bears (-7.2) and Tampa Bay Buccaneers (-7.4) occupy spots 31 and 32. The Bears have the greatest likelihood of getting the No. 1 pick in the 2016 draft (27 percent).

Looking to Week 3, according to pregame matchup quality, the Monday Night Football game between the Kansas City Chiefs and the Packers is the top matchup of the week. FPI gives the Packers a 69 percent chance of winning.