NASCAR: 5 Lessons We Learned from Sunday’s AdvoCare 500 at Phoenix

What many believed would be a mundane, routine, even boring race Sunday at Phoenix International Raceway was anything but.

From a serious shuffling of the points standings to a melee on pit road in the closing laps unlike any seen in NASCAR in recent memory, Sunday's AdvoCare 500 was one of the most exciting yet troubling races we've seen all year.

In the end, a race that many thought would bring Jimmie Johnson one step closer to his sixth career Sprint Cup championship actually may have cost him the very same thing.

Let's recap the five top lessons we learned from Sunday's race at Phoenix:

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