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Elaine Thompson/Associated Press

Week 6 of the NFL season opened without any undefeated teams, but the Jacksonville Jaguars and Oakland Raiders were looking for their first win of the year. Everyone else in between is essentially fighting for a playoff spot.

Tough divisional games in the AFC North and West and NFC West and East helped determine more of a pecking order through six weeks. And as the season moves along, it's becoming more and more clear that the top tier of teams is head and shoulders above the next group.

This was a good week for the elite playoff contenders in Dallas, Denver, Indianapolis and Green Bay. If you believe in the Lions, Patriots, 49ers, Ravens or a wild-card Cinderella-story team, this was also a good week.

Who is the best team in the NFL right now? That one is easy. Filling in the rest of the spots? Not so much.