sport news White Birch dents lofty Aidan O'Brien-trained reputations trends now

White Birch dents lofty Aidan O'Brien-trained reputations with victory in recognised Derby trial Ballysax Stakes at Leopardstown on Sunday   Aidan O'Brien saddled hot favourite Alexandroupolis alongside Denmark  However it was John Joseph Murphy-trained White Birch which stole the show 

By Sam Turner For The Daily Mail

Published: 22:46 BST, 2 April 2023 | Updated: 22:46 BST, 2 April 2023