A TREMENDOUS week on the trials front for Aidan O’Brien ended on a high as Stone Age put on an all-star display in the Group 3 Derby Trial Stakes to look perhaps his trainer’s most compelling Epsom contender to-date this season.

On the day he announced that Luxembourg would miss the Derby, the Ballydoyle trainer could take a great deal of solace from the performance of this striking Galileo colt who made it 15 wins in the race for O’Brien.