Chase bubble slippery with four to go
For Chase hopefuls, it's down to the final four.
Four more races -- Michigan, Bristol, Atlanta and Richmond -- to secure one of the 12 spots in the 10-race playoff.
Only one person has all but clinched: Tony Stewart. His victory Monday at Watkins Glen means Stewart is in the Chase as long as he starts one of the next four events.
Five others are safe, barring four consecutive finishes near the back of the pack: Jimmie Johnson, Jeff Gordon, Kurt Busch, Denny ...
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