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
1977 Belmont Stakes 1977 Belmont Stakes The 1977 Belmont Stakes was the 109th running of the Belmont Stakes at Belmont Park in Elmont, New York held on June 11, 1977. With a field of eight horses, Seattle Slew won by four lengths in front of a crowd of 70,229 spectators. In conjunction with previously winning the Kentucky Derby and Preakness Stakes, Seattle Slew became the tenth horse to with the Triple Crown of Thoroughbred Racing, and the first to do so unbeaten. The race went off at 5:47 pm ET and was televised on CBS nationwide. Times: mile: :24.6, mile: :48.4, mile: 1:14,