... teams in the NFL with a perfect 3-0 record (the Chiefs and Steelers are the others). 

There are five teams sporting 0-3 records, desperate for a win on Sunday, or else they could be waving their 2010 season goodbye far too soon. 

There' are coaches already on the hot seat, along with players making returns to long-tenured cities.

And yes, no matter how early it may be, there's already a battle for first place.

This will be by far the most intriguing week of the season so far.  With that, we're diving into the top five storylines in Week 4.

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