O'Brien Trio Leading The Charge In Doncaster Classic A formidable Ballydoyle contingent is set to descend upon Doncaster on Saturday as Aidan O'Brien launches a three-pronged assault on the Gr.1 Betfred St Leger. The Irish maestro, seeking an eighth triumph in the world's oldest Classic, has declared Illinois, Jan Brueghel, and Grosvenor Square in a select field of seven for the 1m6½f contest. ...