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.