Jimmie Johnson

HEY, JIMMIE JOHNSON You're the best ever, Superman in a firesuit, a three-time NASCAR champion rolling toward your fourth straight Cup—fourth straight!—and yet you're humble and quiet and polite and nice ...

If the field doesn't close on Jimmie Johnson in the next two races, he'll cruise to a fourth straight Cup title

With a dominating win at Dover, Jimmie Johnson served notice that his drive for a fourth Cup is in high gear

Who'll move up, who'll move down—and who'll come out on top when the checkered flag flies at Homestead

is eyeing a historic four-peat, but he faces a field of former champs and proven race winners (including one very hungry, very fast old man). Here are five checkpoints to watch for as the most competitive Chase yet...