MotoGP champion Marc Marquez won the title in epic fashion as a rookie last season. What he's doing, headed into this weekend's Red Bull Indianapolis Grand Prix, may be even better, writes John Oreovicz.
Helio Castroneves continues his quest for a first Indy car title Sunday at scenic Mid-Ohio Sports Car Course -- a track that has been awfully good to the three-time Indy 500 winner, writes John Oreovicz.
Tony Stewart is trying to win his third Brickyard 400 in front of his home-state fans. Jimmie Johnson is vying for a record fifth. That's just two of the storylines to watch Sunday, writes John Oreovicz.