Aidan O'Brien will be bidding for a third successive triumph in the Chester Vase and his sixth in all when Hans Holbein faces five rivals on the Roodee tomorrow.
The son of Montjeu, which also held an entry in Friday's Dee Stakes, is Ballydoyle's only representative from seven possibles.
Hans Holbein, which has had a busy spring campaign, will be taken on by Godolphin's Future Empire, which was well beaten by Christophermarlowe in Epsom's Derby Trial two weeks ago.
David Brown saddles Medrano, placed in both his starts in France this term, while Mike de Kock's Tannaaf, easy Leicester maiden winner Storm The Stars and the Richard Hannon-trained Proposed complete the six-strong field.
Dermot Weld's Zawraq and O'Brien's John F Kennedy are among 12 entries for Sunday's usually informative Derrinstown Stud Derby Trial at Leopardstown.
Zawraq, the general second favourite for the Investec Derby, is not a definite runner as regular rider Pat Smullen is suspended after losing his appeal against a two-day ban for careless riding.
O'Brien has committed John F Kennedy as he needs to put a dismal run in the Ballysax Stakes behind him.
Weld has also entered Summaya, while O'Brien has put in Cape Clear Island, Cradle Mountain, Kilimanjaro, Order Of St George and Royal Navy Ship.