Kyle Busch slid onto the grass after coming through a turn during NASCAR Sprint Cup practice Saturday, damaging his No. 18 Toyota. Busch returned to the track in a backup car, but the accident was the kind of scenario he needs to avoid as he tries to hold onto his spot in the Chase. Busch has won four times this year, but he's only 30th in points because he missed 11 races after breaking his leg and foot in February. More...