The first undefeated Triple Crown winner, Seattle Slew was a popular dark bay who inspired “Slewmania” when posting convincing wins in the Kentucky Derby, Preakness and Belmont Stakes in 1977. Donate to support COVID-19 relief & pick the winner of the Triple Crown Showdown for a chance to win the Ultimate Kentucky Derby Experience at KentuckyDerby.com | Kentucky Derby

The biggest controversy in Kentucky Derby history before this year may have been the 1968 Kentucky Derby. Dancer's Image won the race, but was later disqualified for having traces of phenylbutazone, which was illegal at the time. HRTV dove deep into the legendary story of Dancer's Image. 51 years later the winner of the 2019 Kentucky Derby, Maximum Security, became only the second winner to be disqualified, but this time it was for a much different reason. | XBTV

Fifty-five years ago, Dancer’s Image won the Kentucky Derby. But shortly thereafter, the New England racehorse became the first winner to be disqualified in Derby history. Controversy still surrounds the disqualification. https://bit.ly/3AUrdvR | WMUR-TV