EPSOM, United Kingdom (AFP) - Aidan O'Brien became the first trainer to win three successive Epsom Derbies on Saturday as favourite Australia prevailed in a thrilling race.
Australia, ridden by O'Brien's 21-year-old son Joseph, repelled a late challenge by Kingston Hill (15-2) to take the honours at 11-8 while Romsdal was third at 20-1.
Australia, O'Brien's fifth winner in the race considered the "blue riband of the turf", follows Camelot and Ruler of the World in giving the Irish trainer his hat-trick.