Roaring Lion is rated about 6-1 second favourite for the Derby next month after winning York’s Dante Stakes but is not certain to run at Epsom.
The John Gosden-trained winner (3-1 favourite) – ridden by Oisin Murphy – triumphed by four and a half lengths.
Long-time leader Mildenberger (7-2) was second with Zabriskie (50-1) third.
Roaring Lion was fifth in the 2,000 Guineas and his York win franks the form of Guineas winner and Derby favourite Saxon Warrior.
“He’s a playboy. He’s inclined not to concentrate sometimes,” said Gosden of Roaring Lion, who is owned by Qatar Racing.
Gosden said it was not clear whether the horse would run at Epsom or in the French Derby.
BBC horse racing correspondent Cornelius Lysaght
Roaring Lion looked as though the mile and a half of the Derby at Epsom – a quarter-mile further than this – would be within his range. After all, he certainly wasn’t stopping at the end.
However, the mile and a quarter of France’s equivalent may be considered more suitable, and there are two other tempting advantages associated with a trip across the Channel.
Saxon Warrior, who has beaten Roaring Lion on the two occasions they’ve met, won’t be there, and the owners affiliate company QIPCO sponsors the French prize.