Duvall was, a great actor, with an everyman quality and deep capacity for hard work on his craft and whatever a film needed.

He guided Zenyatta, a spectacular mare, to 19 consecutive wins and won the Kentucky Derby in 2005 with Giacomo, a 50-1 long shot.

Peter Eurton, Bob Hess Jr. and Leonard Powell have picked up horses after Shirreffs, best known for Zenyatta and Giacomo, ...