Joseph Patrick O'Brien is an Irish horse racing trainer and former flat racing jockey. He is the son of trainer Aidan O'Brien. In 2012 he rode Camelot to win the 2,000 Guineas, the 2012 Epsom Derby and the Irish Derby. From Wikipedia
Gstaad’s sluggish final workout prompted his withdrawal to leave True Love as the runaway pick for Ballydoyle’s Group 1 juvenile sprint