To most readers of current turf history, Sam Riddle was the dour and difficult businessman who, it was said, ruined the stud career of Man o' War. He certainly didn't win any popularity contests in the War Admiral - Seabiscuit confrontation.

Pedigree analyst and author Rommy Faversham explains the close connection between Riddle and Walter Jeffords. Their racing and training enterprises were closely associated but their combined breeding philosophies changed the landscape of American Thoroughbred pedigrees. The team bred the likes of War Relic, War Admiral, Crusader and more. Man o' War is one of the few American male lines from the first half of the 20th century that remains viable today.