NASCAR's Sprint Cup Series is off this weekend. The Nationwide Series heads to Chicagoland Speedway in Joliet, Illinois for the STP 300 on Sunday. Kasey Kahne won last weekend's LENOX Industrial Tools 301 at New Hampshire. Matt Kenseth holds a 16-point lead over Dale Earnhardt Jr. atop the Cup standings. Greg Biffle, Jimme Johnson and Denny Hamlin round out the top-five.