Sunday, 25 March 1973
USAC National Sprint Cars
Sunday, 01 April 1973
Saturday, 14 April 1973
Sunday, 29 April 1973
Sunday, 03 June 1973
Friday, 08 June 1973
Sunday, 24 June 1973
Saturday, 11 August 1973
Sunday, 16 September 1973
Friday, 21 September 1973
Saturday, 22 September 1973
Sunday, 21 October 1973
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