Alysheba, winner of the 1987 Kentucky Derby and 1988 Horse of the Year, was euthanized on March 27 at Hagyard Equine Medical Institute in Lexington, Ky., due to injuries suffered in a fall at the Kentucky Horse Park. The son of Alydar was 25. Click the links at right for more photos from Alysheba's historic Kentucky Derby victory in 1987.