| Prove Out | |
|---|---|
| Sire | Graustark |
| Grandsire | Ribot |
| Dam | Equal Venture |
| Damsire | Bold Venture |
| Sex | Stallion |
| Foaled | 1969 |
| Country | United States |
| Colour | Chestnut |
| Breeder | King Ranch |
| Owner | 1) King Ranch 2) Hobeau Farm |
| Trainer | H. Allen Jerkens |
| Record | 39: 9-6-4 |
| Earnings | US$270,426 |
| Major wins | |
| Jockey Club Gold Cup (1973) Woodward Stakes (1973) Grey Lag Handicap (1974) | |
Prove Out (1969–1990) was an American thoroughbred racehorse best known for his wins over Secretariat in the 1973 Woodward Stakes, and Riva Ridge in the 1973 Jockey Club Gold Cup. Over a two month period in 1973, he defeated four Hall of Fame horses (Secretariat, Riva Ridge, Forego, and Cougar II) in three different races at three different distances.[1]