Jimmie Johnson knows the panic to make Sprint Cup's championship chase is coming. The defending Sprint Cup champion is among those drivers yet to win a race this season, the first since NASCAR expanded its 10-race playoffs to 16 cars and put a bitter emphasis on wins over point standings. Nine drivers have won the first 11 races, with Kevin Harvick and Joey Logano the two-time winners. Not with the Coca-Cola 600, NASCAR's longest race, coming up Sunday night at Charlotte Motor Speedway. More...