HOMESTEAD, Fla. -- For the eighth time in the last 10 years, Jimmie Johnson has arrived in South Florida with a shot to leave with the NASCAR Sprint Cup Series championship.? Should he take advantage of the 28-point cushion he has on the field entering Sunday's Ford EcoBoost 400 season finale at Homestead-Miami Speedway (3 p.m. ET, ESPN), it would be Johnson's sixth championship. Only one time in the 10-year history of NASCAR's Chase for the Sprint Cup has the points leader entering the final race not emerged champion. More...