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|Trainer||J. Elliott Burch|
|Pimlico Futurity (1963)|
Wood Memorial Stakes (1964)
Dwyer Handicap (1964)
Travers Stakes (1964)
Lawrence Realization Stakes (1964) Triple Crown race wins:
Belmont Stakes (1964)
|Last updated on March 4, 2010|
Bred by Paul Mellon, Quadrangle was foaled at the Rokeby Farm near Upperville. He was out of the mare Tap Day, a daughter of the Calumet Farm champion stallion Bull Lea. His sire was the multiple American stakes winner Cohoes, a son of Mahmoud, the Aga Khan's 1936 Epsom Derby winner.
In 1964, Quadrangle also faced several other top-quality three-year-olds including Hill Rise and Roman Brother, plus older horses such as Kelso and Gun Bow. Earlier in the 1964 racing season, the colt had won the Wood Memorial Stakes before finishing fifth in the Kentucky Derby and fourth in the Preakness Stakes to winner Northern Dancer. After his upset win in the Belmont Stakes under jockey Manuel Ycaza, Quadrangle won that year's Dwyer Handicap, the prestigious Travers Stakes, and the Lawrence Realization Stakes. At the end of his 3 year old campaign he bowed a tendon and was rested. In 1965, at age four, his best result in a Graded stakes race was a second in the Californian Stakes at Hollywood Park Racetrack.
While still at stud, Quadrangle broke a leg and was humanely destroyed in 1978 at age seventeen.