O`Brien leaves ten in Trophy Aidan O`Brien is responsible for 10 of the 15 confirmations for the Racing Post Trophy at Doncaster on Saturday.O'Brien's acceptors for the last Group One race of the season in Britain is headed by Castle Gandolfo, owned by Sue Magnier, but other interesting possibles include last week`s Newmarket winner Century City.The other possibles are the supplemented Godolphin runner Mount Joy, Mr Sandancer for James Given, Redback for Richard Hannon, Savannah Bay for Brian Meehan and Tahitian Storm, from the Mark Tompkins stable.The 15 confirmations are: Camp David, Canberra, Castle Gandolfo, Century City, Della Francesca, High Chaparral, High Sierra, Mr Sandancer, Mutinyonthebounty, Redback, Savannah Bay, Tahitian Storm, Temple of Artemis, Wiseman`s Ferry and Mount Joy.
