NASCAR changes rules to try to improve short-track racing
NASCAR teams will now use a separate rules package at Bristol, Dover, Martinsville, New Hampshire, Phoenix, Richmond, the Charlotte Roval, Sonoma and Watkins Glen.
Jimmie Johnson, seven-time NASCAR champion, to retire after 2020 season
Johnson has spent his entire career with the Hendrick Motorsports No. 48 Chevrolet operation, which he has called home since his premier series debut in 2001.