Douglas Macarthur came out on top in a Ballydoyle-dominated finish to the Derrinstown Stud Derby Trial at Leopardstown on Sunday.
Thriller! Three runners in the Derrinstown Stud Derby Trial for Aidan O'Brien and gets the 1-2-3 with Douglas Macarthur landing the spoils: pic.twitter.com/EygP4EGI5S
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