Dancer’s Image wins the Kentucky Derby in Louisville, Kentucky.

Ridden by Bobby Ussery and owned by Boston businessman Peter Fuller, the colt comes from last place in a field of 14 to win the race at Churchill Downs. But three days later, the horse is disqualified after a post-race test found traces of a commonly used anti-inflammatory drug that, according to its trainer, had been administered almost a week before and should no longer have been present in the horse’s system. It is subsequently alleged that race officials manipulated the results of the test and the real reason for the disqualification was that Fuller had donated the $62,000 purse from the horse’s previous victory to Coretta Scott King.