NFL Power Rankings, Week 5: 49ers vault back into top five, send Rams tumbling out of top 10

Parity remains a calling card of the NFL as we hit the quarter point of the regular season.

The league currently has one unbeaten team (Eagles), one winless squad (Texans),

seven teams at 3-1, seven more at 1-3 and a whopping 15 squads at 2-2 --

 a long list of .500 outfits that includes both Super Bowl participants of a season ago.

This makes for a dense fog in the land of the NFL Power Rankings. Time to throw up the high beams and see our way through this.

Wait, we're supposed to turn the headlights off? You're messing with me. Forget it.

Previous rank: No. 1 Adversity came for the Eagles on Sunday, and they turned it away. Playing in rainy conditions and with multiple important players forced out of action with injuries.

2. Philly relied on its ground attack (210 yards rushing) and an opportunistic defense (five turnovers) to hold off a game Jaguars team at the Linc.

3. The Bills were getting pushed around by the Ravens during what had the makings of a classic

 Statement Game for John Harbaugh's lot, a blowout conquest that would change the perception of two superpowers.

4.Patrick Mahomes used the prime-time stage of Sunday Night Football to remind the world that he remains --

 even in a golden age of quarterback play -- a one-of-one proposition.

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