Week 4 in the NFL saw a couple of familiar teams resurface as potential contenders in the AFC, as well as a few wacky games in the NFC headlined by a tie between the Packers and Cowboys on Sunday Night .

Two teams, the Philadelphia Eagles and the Buffalo Bills, improved to 4-0 and are the only unbeaten teams remaining in the league. However, it wasn't enough to crack the list of winners in Week 4. Let's dive into who should be feeling good coming out of September.

Are the Chiefs back?

Everyone was slamming the panic button on the Chiefs after their 0-2 start, and Kansas City was less than impressive in its Week 3 win over the Giants. On Sunday, however, Kansas City looked like the Super Bowl contender it has become known as with Patrick Mahomes at quarterback.

In its first game with

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