\"The undefeated 5-year-old mare Zenyatta, who became the first female to win the Breeders\' Cup Classic (gr. I) last month at Santa Anita, finished second to tennis star Serena Williams as the Associated Press \"Female Athlete of the Year\" for 2009, it was announced Dec. 22.\"
From Bloodhorse
http://www.bloodhorse.com/horse-racing/articles/54522/zenyatta-second-in-ap-female-athlete-vote