The 1979 Mason-Dixon 500 was a Winston Cup (now Nextel Cup) event held at Dover International Speedway on May 20, 1979. Neil Bonnett captured his first victory of the year in a close decision, holding off Cale Yarborough by just two carlengths. Points leader Darrell Waltrip led 24 laps, but his 18th place finish cost him the points lead, now 30 markers behind Bobby Allison (4th). Stats