Dover International Speedway
1969 - Dover Downs opens as a unique dual purpose facility, designed to accommodate both horse racing and motorsports events. The first event on the Speedway is a NASCAR Sprint Cup Series race, the "Mason-Dixon 300," on July 6, won by Richard Petty.
1971 - All non-NASCAR sanctioned motorsports events are dropped from the schedule to concentrate on two 500-mile NASCAR Sprint Cup Series races traditionally held in June and September of each year.
1982 - Joe Ruttman wins Dover's first NASCAR Nationwide Series race, the "Sportsman 200," a new Saturday attraction for race fans.
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