Aidan O'Brien is responsible for six of the 15 juveniles confirmed for the Racing Post Trophy at Doncaster on Saturday.

The master of Ballydoyle has saddled six previous winners of the Group One, with Camelot a scintillating winner 12 months ago.

His leading hope this year appears to be Beresford Stakes winner Battle Of Marengo, although hugely impressive Navan maiden scorer Kingsbarns has been supplemented by the team.

O'Brien is also responsible for Festive Cheer, Eye Of The Storm, Kingston Jamaica and Magician.

The other major Irish hops are the Jim Bolger-trained Trading Leather, an impressive winner of the Autumn Stakes at Newmarket  and Andrew Oliver's Futurity Stakes hero First Cornerstone. 

Richard Hannon has added Van Der Neer to the field, and could also saddle smart youngster Havana Gold.

Birdman, Fantastic Moon, Glory Awaits, Sir Patrick Moore and Royal Lodge winner Steeler complete the entries.