Upon the death of Danzig Connection in 2010, he became the last living thoroughbred to win a Triple Crown race during the decade of the 1980s.
Damsire Prove It was a multiple stakes winner whose victories included the prestigious Santa Anita Handicap (1961) and Hollywood Gold Cup (1962).
The colt made seven starts at age two, notably winning the one mile Play The Palace Stakes at the Meadowlands Racetrack in track record time.
[2] The contrast between his "hay, oats, and water" regimen and a controversy involving other horses in the 1983 Preakness (where some out-of-state trainers sued to be allowed to race their horses on Lasix, which was banned in Maryland at the time) was the subject of a feature article in Sports Illustrated following his victory.
Syndicated and retired to stud at his Bonita Farm, Deputed Testamony sired progeny that met with modest racing success.