As we head into the final week of the NFL season, there's going to be a lot of drama and that's because there are still two playoff spots and three divisions up for grabs.  The NFC South, NFC North and AFC North will all be decided this weekend.

Entering the Week 18 slate, all but two postseason spots have been secured: The NFC South division and the third and final AFC wild-card spot. But there is plenty of playoff positioning and seeding yet to be decided—including the No. 1 seed in the NFC.

With a week to go in the N.F.L. season, these detailed trees and scenarios explain every contender’s paths to the playoffs — and to better seeding.