Dawn Approach has emerged a surprise contender for Tuesday’s St James’s Palace Stakes at Royal Ascot.

Jockey Joseph O’Brien is hoping the rain stays away from Leopardstown to allow Battle Of Marengo to show his full potential in the Derrinstown Stud Derby Trial tomorrow.

Battle Of Marengo laid down an early marker for the Investec Derby with a determined triumph in the P.W. McGrath Memorial Ballysax Stakes at Leopardstown.