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Every team is undefeated right now.

Every team just added a bunch of exciting players in the draft. That means every team is undefeated AND on the rise right now. It kind of makes power rankings a drag. Shouldn't all 32 teams be tied at No. 1?

Not really. We all know the Patriots rank above the Jaguars. Even hard-core 49ers fans are braced to see their team slip in the preseason rankings. The Dolphins certainly look a little better than they did last season. The Packers have not changed much, but how much did they really have to change?

So we start with last year’s performance. I use Football Outsiders DVOA, not win-loss records, and we add or subtract free agents, trades and retirements. But there is more to a good power ranking than just that. A good draft class can have a big impact, particularly on a weak team. A bad draft class—or a draft that is so focused on three years down the road that it provides little immediate help (hello, Bengals and Seahawks), can cause some ranking slippage. New coaches and coordinators have an impact. And then there is player development: A young team with lots of budding talent should have a projection edge over a team that is growing old at several positions. You may see that phenomenon at work as you search for the Rams, Vikings, Cardinals and Saints.

Throw all the variables onto a spreadsheet, crunch some numbers and you get a pretty good power ranking. Then, if you are like me, you fudge a bit. But not too much. Surprising results could be mistakes, but they could also be revelations.

Here are my post-draft power rankings. They are as meaningless as they are entertaining.