Authorized (horse) going, and Authorized was ridden for the first time by Frankie Dettori. He won at odds of 25 to 1, by one and three quarter lengths from Charlie Farnsbarns. The odds-on favourite Eagle Mountain finished fourth. Authorized was quoted immediately after the race at 16 to 1 for the 2007 Epsom Derby but this was soon cut to 10 to 1. Authorized’s first run as a three-year-old came in the ten furlong Dante Stakes at York Racecourse on 17 May. Ridden by Frankie Dettori, Authorized was sent off 10 to 11 favourite and won by four lengths from Raincoat. It
1981 Epsom Derby 1981 Epsom Derby The 1981 Epsom Derby was the 202nd annual running of the Derby horse race. It took place at Epsom Downs Racecourse on 3 June 1981. The race was won by the Aga Khan's Shergar, at odds of 10/11 ridden by the nineteen-year-old jockey Walter Swinburn and trained at Newmarket, Suffolk by Michael Stoute. The winning margin of ten lengths was the largest in the history of the race. However, the winning time of 2:44.21 was the slowest since 1946. Lydian was scratched at the start after refusing to enter the stalls. Further details of the winner, Shergar: