Good Magic chose the biggest juvenile race in the US to break his maiden tag as he stormed to victory in the Breeders' Cup Juvenile at Del Mar.
Ryan Moore pushed the Aidan O'Brien-trained Dewhurst winner US Navy Flag straight into the lead for the early part of the race, but he was brushed aside just after halfway and Chad Brown's Good Magic burst into the lead on the home turn under Jose Ortiz.
The $1million purchase never looked back after that, winning easily from Solomini, with hot favourite Bolt D'Oro third after being forced to race very wide throughout the race.
O'Brien said of US Navy Flag, who also won the Middle Park Stakes this season: "As you can see he's a fast horse and is going to be a sprinter next year."
Brown said of the winner: "It was a tremendous ride from Jose and I'm so proud of this horse. He's always been a very talented horse and it all came together today.
"The reward was greater than the risk to run. We took a shot and it worked."