AVONDALE, Ariz. – When the fighting stopped, the oil had dried and the last of the wrecked cars had been towed away, Brad Keselowski found himself on the brink of a first Sprint Cup title for himself and team owner Roger Penske.

Only he wasn’t in a celebratory mood.

He entered Sunday’s race at Phoenix International Raceway trailing five-time champion Jimmie Johnson by seven points and had the better car all day. And moments after Keselowski raced his way into the lead, a blown tire caused Johnson to crash and take his battered car to the garage for repairs.