This Day in History: 1973-06-30

Three weeks after he won the Triple Crown, Secretariat scored another victory, a nine-length win in the Arlington Invitational Stakes at Arlington Park, where he was sent off at the shortest odds in his career, 1-20. With no place or show wagering on the four-horse race, which was run with a three-horse field against Secretariat, the track had a minus win pool of $17,941. More than 40,000 spectators turned out for the event.