This is not the first time a Derby winner had been disqualified. The 1968 winner, Dancer’s Image, was disqualified when the post-race test came up positive for phenylbutazone. Forward Pass was declared the winner.
Dancer’s Image had been given the drug the Sunday before the race. The irony is that “bute” has subsequently been legalized, and virtually all racehorses use it.
Dancer’s Image, meet Maximum Security.
Thanks for the info. Good history stuff.