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
1978 Belmont Stakes 1978 Belmont Stakes The 1978 Belmont Stakes was the 110th running of the Belmont Stakes. It occurred on June 10, 1978, and was televised on CBS. Affirmed completed the 11th Triple Crown after his victories in the 1978 Kentucky Derby and the 1978 Preakness Stakes. As in the prior two legs of the Triple Crown, he narrowly defeated Alydar. Affirmed and Alydar ran head to head for the last half mile of the mile and a half race, with Affirmed ultimately winning by a head. Affirmed's winning time of 2:26 4/5 was the 3rd best in history at the time,