For decades, horseracing has been a popular sport all over the nation. Millions of horses have come and gone, but three horses have won a place in thoroughbred racing history and become legends in the horse world. There’s Seabiscuit, a true underdog who brought most of America out of the Depression, Secretariat, with a heart as big as his story, and the might War Admiral, voted best racehorse in the nation. He was king on the track and with his fans.