After seven months and 28 races, NASCAR has hit that part of the season that really matters. The start of the playoffs signifies a shift in attitude and aggression, and if there was any doubt the mindset had changed, Kevin Harvick posted a warning about his mood for the next 10 weeks. Tony Stewart has intentionally wrecked drivers in two consecutive races, including Saturday night's regular-season finale with contact that officially ended Ryan Newman's shot at making the Chase. More...