O'Brien feels he let jockey down with City Of Troy 2000 Guineas preparation

"We did our homework but we didn't do it all properly. That's the way I would look at the Guineas."

Trainer Aidan O'Brien on a wet and windy morning with 1st Lot including dual Derby winner Auguste Rodin on the gallops. Picture: Healy Racing

He’s arguably the best trainer in racing history but past success doesn’t lessen the guilt Aidan O’Brien feels when things go wrong.

Speaking at his pre-Derby media day, O’Brien was quizzed about the apologetic tone he struck after City Of Troy’s potential Triple Crown bid was torpedoed in the 2000 Guineas at Newmarket earlier this month.