Aidan O'Brien keen to exorcise City of Troy Guineas ghost

Twain and Rachel Richardson on the gallops at Ballydoyle yesterday. Picture: Healy Racing
Aidan O'Brien is leaving no stone unturned as he prepares the lightly-raced pair of Twain and Expanded for the Betfred 2000 Guineas at Newmarket.
The Ballydoyle handler has saddled 10 previous winners of the first colts' Classic of the season, but was last year left blaming himself after his superstar City Of Troy failed to fire on the Rowley Mile.