High Quality Content by WIKIPEDIA articles! Erhaab (foaled 24 May 1991) is a retired Thoroughbred race horse and active sire, bred in the United States but trained in the United Kingdom. He is best known as the winner of the Epsom Derby in 1994. In 2011 he was moved from the Wood Farm Stud in Shropshire, to the Batsford Stud in Gloucestershire.