Tags: Race Horse.
Maryfield (foaled April 13 2001 in Ontario) is a retired Hall of Fame and Champion Thoroughbred racehorse. Trained by Doug O’Neill she raced for her American owners in the United States. In 2007 Maryfield became only the fourth Canadian-bred horse to ever win a Breeders’ Cup race when she captured the Filly & Mare Sprint hosted that year by Monmouth Park Racetrack.