|Breeder||Robert E. Lehmann|
|Owner||Golden Chance Farm|
|Trainer||William E. "Smiley" Adams|
|Master Derby is a thoroughbred racehorse out of Madam Jerry by Dust Commander. He was born around 1972 in the United States, and was bred by Robert E. Lehmann.|
Kindergarten Stakes (1974)
Preakness Stakes (1975)
|Leading broodmare sire in Britain & Ireland (1991)|
|Horse (Equus ferus caballus)|
Master Derby (1972-1999) was an American Thoroughbred racehorse best known for winning the 1975 Preakness Stakes. He was bred by Robert E. Lehmann at his Golden Chance Farm in Paris, Kentucky. Master Derby was out of the mare Madam Jerry, and sired by Lehmann's 1970 Kentucky Derby winner, Dust Commander.
Conditioned for racing by trainer Smiley Adams, at age two Master Derby made twelve starts, finishing either first or second in all of them. His best stakes race results were wins in the Grade III Kindergarten Stakes sprint race and a division of the Grade III Dragoon Stakes. He also earned a second-place finish in the important 1974 Breeders' Futurity Stakes and the Kentucky Jockey Club Stakes.
Racing as a three-year-old, Master Derby began his season with two straight losses in six-furlong sprints but then won the much longer 1 1/16 miles Louisiana Derby Trial Stakes and the 1⅛ miles Louisiana Derby. Aimed for the Kentucky Derby, from his base in Louisiana his handlers shipped him to Keeneland Race Course in Kentucky, where jockey Darrel McHargue rode him to victory in the Lexington Stakes and the Blue Grass Stakes.
With McHargue as his rider in the 1975 U.S. Triple Crown races, Master Derby ran fourth in the Kentucky Derby to the heavily-favored winner Foolish Pleasure, then won the Preakness Stakes before finishing third in the Belmont Stakes to winner Avatar.
Retired to stud duty, Master Derby met with modest success as a sire. The most notable of his progeny in racing was the Grade I winner Uptown Swell, who earned just under $1 million for owner Virginia Kraft Payson. However, his daughter Doff The Derby produced Generous, whose 1991 Group One victories in England and Ireland included the Epsom and Irish Derbys and whose earnings helped make Master Derby the 1991 Leading broodmare sire in Great Britain & Ireland.
In January 1999, due to the infirmities of old age, the twenty-seven-year-old Master Derby was humanely euthanized at Notjustanother Farm in Chino, California.