 He also had a very large heart, about twice the size of the average horse's, as discovered during the necropsy following his death.Sham and Linda's Chief, who were campaigning at Santa Anita Park, were considered the principal candidates from the West to contest 1972 Two Year Old champion and Horse of the Year Secretariat for the 1973 Kentucky Derby.On February 17, Sham earned his fourth consecutive win and first stakes win in the Santa Catalina Stakes at 1 miles.