In one of the tamest NASCAR title contenders' news conferences in recent memory, Matt Kenseth and Kevin Harvick kept it light and breezy as they discussed their championship chances against Jimmie Johnson. ''Maybe because he's ahead by 28 points?'' Kenseth said. ''He's going to have to have a mechanical problem or crash to make something happen.'' But nothing is a given in auto racing, as Johnson learned last year as he raced Brad Keselowski for the title. Johnson went in to the penultimate race with a seven-point lead in the standings only to suffer a tire failure at Phoenix. More...