Jockey Flavien Prat rides Eagles Flight, the 3-year-old son of Curlin, to a 2 3/4-length win at Santa Anita in his debut.
The Derby is the biggest race of the Flat season and the most important of the British Classics.
The Derby is the richest race in the British racing calendar and is always sure to draw a selection of the finest three-year-old colts to Epsom on the first Saturday in June.
The Aidan O'Brien-trained City Of Troy is one of 20 horses left in the field for Saturday's Betfred Derby at Epsom.