Jockey Edgar Prado became the fourth jockey in history to ride 500 winners in a single year. ~1997
Advertising on jockeys' attire, owners' silks, and track saddlecloths became legal at California tracks. ~2001
Jockey Kent Desormeaux surpassed Chris McCarron's 15-year record for most number of victories in a single season when he rode his 547th winner for the year, at Laurel. ~1989