Santa Anita Derby
A record crowd of 61,123 attended the Santa Anita Derby, California's major Kentucky Derby prep race, on March 8, 1958. Carrying 54 kg (118 pounds), Silky Sullivan faced nine other three-year-olds including Old Pueblo, who had defeated him in the Breeder's Champion Stakes. The 10-horse field for the 21st running of the Santa Anita Derby (by post position) was: