Prove Out to the eventual 1973 Horse of the Year. Prove Out also defeated Secretariat's stablemate, the 1972 Kentucky Derby winner and 1973 U.S. Champion Older Horse Riva Ridge, in the 1973 Jockey Club Gold Cup. In addition to his two memorable victories in 1973, Prove Out also ran track record times at Saratoga for 7 furlongs (1:21), and at Belmont Park for 1 miles (1:40). His Woodward Stakes time of 2:25 for 1 miles on an off track is the second fastest performance ever recorded for that distance at Belmont Park, behind only Secretariat's 2:24 record Belmont Stakes win. Prove Out's
Animal Kingdom (horse) at the meeting after Reigh Count in 1929 and Omaha in 1936. He started 5/4 favourite for the race, but finished eleventh of the thirteen runners behind Declaration of War. Animal Kingdom (horse) Animal Kingdom (foaled in Kentucky on March 20, 2008) is an American Thoroughbred racehorse best known for winning the 137th Kentucky Derby and the 2013 Dubai World Cup. His Derby win took place on May 7, 2011, before a record crowd of 164,858. After the Derby, Animal Kingdom finished second in the Preakness Stakes and sixth in the Belmont Stakes before his career was disrupted by injury.