One game is an incredibly small sample size. But it's the best bit of information we have to work with right now.
The trick is to put just enough weight into what we saw in Week 1. To figure out how much Buffalo and Oakland need to move up based on 60 competitive minutes, or how much Pittsburgh or Baltimore need to move down based on 60 bad ones.
Here are the power rankings heading into Week 2. The only thing for sure is they'll change a lot again before Week 3, when we have a little more information to judge these teams.
32. Jacksonville Jaguars (0-1, last week: 31)
Wow, that was bad. Total no-show at home against a Chiefs team that was 2-14 last year. No choice but to move them to the basement.
31. Oakland Raiders (0-1, LW: 32)
I loved what Terrelle Pryor did. He gives this team some hope from week to week. But still can't move them up too much.
30. Arizona Cardinals (0-1, LW: 30)
Another team that looked better than expected, but still lost, and who are you going to move them ahead of?
29. Cleveland Browns (0-1, LW: 24)
In retrospect, the preseason means nothing. They'll be better if they follow through on the promise to give Trent Richardson more touches.
28. San Diego Chargers (0-1, LW: 27)
Blew a 28-7 lead at home and lost a heartbreaking game. Norv, is that you?
27. Buffalo Bills (0-1, LW: 29)
Part of their move up is that quarterback EJ Manuel looked healthy, and pretty good.
26. New York Jets (1-0, LW: 26)
They did some good things. It was a nice win. And they were incredibly fortunate to get it.
25. Tampa Bay Buccaneers (0-1, LW: 22)
They likely win if not for that personal foul call on linebacker Lavonte David. Still, you can't be in position to lose to the Jets.
24. Pittsburgh Steelers (0-1, LW: 17)
That was a really bad performance. Still, you can't completely write them off yet. Let's see how they respond against Cincinnati.
23. Minnesota Vikings (0-1, LW: 18)
The defense won't give up 469 yards every week. They might bounce back quickly.
22. Tennessee Titans (1-0, LW: 28)
Tough team to rank. The defense played so well in Week 1, but still, do you trust them yet?
21. Miami Dolphins (1-0, LW: 23)
Good to start with a road win, but where was the running game? They need one.
20. St. Louis Rams (1-0, LW: 21)
It was a struggle, but they won. And tight end Jared Cook gives Sam Bradford some much-needed help.
19. Washington Redskins (0-1, LW: 13)
There were some positive signs of life in the second half against the Eagles. Robert Griffin III finally started looking comfortable.
18. New York Giants (0-1, LW: 12)
Throughout all the issues, Eli Manning still almost willed them to a win. But their running game is a much bigger mess than anyone could have thought.
17. Carolina Panthers (0-1, LW: 11)
If DeAngelo Williams doesn't fumble at the 8-yard line, they're probably top 10. Alas, they're here.
16. Baltimore Ravens (0-1, LW: 9)
There are some serious questions with the secondary and the passing game after one week.
15. Kansas City Chiefs (1-0, LW: 20)
It almost doesn't count beating Jacksonville, but hey, 26-point road wins are always a good sign, no matter the competition.
14. Dallas Cowboys (1-0, LW: 19)
In the big picture, almost blowing a home game against a Giants team with five turnovers (the sixth effectively ended the game) leaves you a bit nervous.
13. Indianapolis Colts (1-0, LW: 14)
Hard to move them up after almost losing at home to Oakland, but at least they won.
12. Philadelphia Eagles (1-0, LW: 25)
Yep, I'm convinced. The defense is still not great, but this offense is going to outscore a lot of teams.
11. Detroit Lions (1-0, LW: 16)
The defense held down Adrian Peterson well after his first carry, and the offense is so much better with a second playmaker in Reggie Bush.
10. Atlanta Falcons (0-1, LW: 10)
They get a few more yards at the end at New Orleans, they're probably a few spots higher.
9. New Orleans Saints (1-0, LW: 15)
They deserve this nice move up. The defense still is a concern, but that was an excellent win against Atlanta.
8. Green Bay Packers (0-1, LW: 6)
No shame in losing to the 49ers. Just worried about the offensive line.
7. Chicago Bears (1-0, LW: 8)
Nice win against a very good Bengals team. Jay Cutler played well late. There were some good signs.
6. Cincinnati Bengals (0-1, LW: 4)
Want me to move them down further? They outgained Chicago and would beat the Bears on a neutral field.
5. Houston Texans (1-0, LW: 5)
Getting a victory after trailing by 21 points showed a lot of heart. They need to figure out what went wrong early.
4. New England Patriots (1-0, LW: 3)
Not going to move them down all that much. You just knew Tom Brady was winning that game at the end, right?
3. Denver Broncos (1-0, LW: 7)
I overreacted to a bad August when I moved them down. They have Peyton Manning. They're fine.
2. San Francisco 49ers (1-0, LW: 2)
Whoever wins this week's game at Seattle will earn the top spot next week.
1. Seattle Seahawks (1-0, LW: 1)
They had a very tough Week 1 test at Carolina. And they passed. That's the kind of game a championship team wins. They don't deserve to move down.