2015 NFL Power Rankings: Week 2 ESPN.com

Week: Select Pre 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Thanks to New England's impressive opening victory and an early slipup by Seattle, the Patriots have snared the No. 1 spot in our hierarchy.

That isn't the only significant change stemming from an eventful Week 1. Two notable upsets and other impressive performances have resulted in plenty of shuffling.

ESPN's Power Panel has rewarded several teams -- including Buffalo, St. Louis and Tennessee -- for success out of the gate. The Bills cracked the top 10, jumping from No. 18 to No. 9, after dominating the Colts, while the Rams rose eight spots to No. 14 after knocking off the Seahawks. The Titans, fueled by rookie quarterback Marcus Mariota's four-touchdown gem, made a seven-spot jump to No. 23.

On the flip side, Philadelphia plummeted from No. 9 to No. 15 after its Monday night loss to Atlanta. Indianapolis took one of the biggest falls, going from No. 4 to No. 11.

Note: The comments below are provided by ESPN Stats & Information.

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