Camelot, the favorite ridden by Joseph O'Brien for his father Aidan, galloped to a dazzling five-length triumph in the Epsom Derby Saturday. It was a third winner of the big race for Irish trainer Aidan and a first for his 19-year-old son. Main Sequence, the mount of Ted Durcan, made late ground to take second place in the nine-strong field with O'Brien's second string Astrology, finishing third after making much of the running under jockey Ryan Moore. O'Brien junior said: “He did well to win today. He's a very special horse and I'm very fortunate to be on his back.” His proud father said: “We were afraid even to dream. No words I can describe this and there was no dream big enough.” Camelot raced toward the rear early on while stablemate Astrology cut out the pace and turning into the straight still had plenty to do. OBrien Jnr. then reeled in the front-runner with 200 meters left and the colt raced away like a truly top-class performer. The winning jockey, aware of the unique character of the Epsom track, said: “This was his first time coming down a hill and round those bends so he was green and backing off a bit. He quickened up well and will have learnt a lot from today.” O'Brien senior won the Epsom Oaks Friday with Was and also captured the first two classics of the season, the 2,000 Guineas, with Camelot, and the 1,000 Guineas. Camelot is now in line to emulate Nijinsky in 1970 by winning the Triple Crown of the 2,000 Guineas, Derby and St. Leger, the final classic at Doncaster in September. Victory in the St. Leger would also mean an unprecedented sweep for his trainer in one year of all five English classics. The race, run in bright sunshine, was watched as usual by Britain's Queen Elizabeth on the opening day of four days of festivities to mark her Diamond Jubilee.