Mike BastMichael Joseph Alvin Bast is a former speedway rider from the United States.Speedway careerBast is a seven times North American champion, winning the AMA [National Speedway Championship] in 1971, 1973, 1975, 1976, 1977, 1978 and 1979.FamilyHis older brother Steve Bast was also a North American speedway champion and his cousin Bart Bast was a US Champion.