You know that old "it's a marathon, not a sprint" cliche that's so often used to describe sports seasons? Consider Week 5 a hill in the middle of the course that, depending on how some teams handle it, could push them way out in front or cause them to fall back to the pack.

Major conference showdowns exist in the ACC, Big Ten, Big 12, Pac-12 and SEC as well as within some of the non-power conferences, games that by themselves won't determine division and league champions but will play a sizable role. There are still 27 unbeaten teams in FBS, but after this weekend, at least four will have fallen and probably several more.

There are 63 games on the docket, ranging from a pair of league tilts Thursday to a Sun Belt midweek cl...

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