Gary Stevens finished second in the last ride of his Hall of Fame career, pushing heavily favored Louve Royale within a length of winner Moonshine Gal in a 1 1-16-mile (1,700-meter) race at Churchill Downs on Saturday.
Despite the loss, Stevens left as "the happiest guy in the world," he said to the applause from thousands of fans on a cold, overcast day.
Stevens finished with 5,005 career victories and more than $220 million in purse earnings. He will stay involved in horse racing, serving as an TV analyst.
Stevens won the Kentucky Derby three times - aboard Winning Colors in 1988, Thunder Gulch in 1995 and Silver Charm in 1997, AP reports.
The shooter freely entered the building of the university and opened fire at those who were present on the ground floor