John Shirreffs won the 2005 Kentucky Derby and three Breeders' Cup World Championships, including the historic 2009 victory of Zenyatta.
John Shirreffs, who trained Zenyatta to a Hall of Fame career and saddled Giacomo to win the 2005 Kentucky Derby (G1), died in his sleep Feb. 12 at his home in Arcadia, Calif. He was 80.