Why didn't zenyatta run in the Kentucky Derby?

Zenyatta did not run in the Kentucky Derby primarily because her connections, including trainer John Shirreffs and owner Jerry Moss, chose to target races that suited her strengths. Zenyatta was a filly and the Derby is traditionally a race for three-year-old colts, making her participation less common. Instead, she focused on races like the Breeders' Cup Classic, where she made history by becoming the first female horse to win the prestigious event.