Dave Blaney is down to one reason to stay at Daytona International Speedway: His son, Ryan, is racing in the Truck Series. Dave Blaney withdrew from the Daytona 500 on Thursday, one day after he totaled his only car in the first full practice for ''The Great American Race.'' Blaney posted the slowest pole-qualifying speed Sunday and was set to start last in the first of two Thursday night races that set the 43-car field for the season-opening Daytona 500. More...