The British-based trainers dominated the top end of the day one Derby Sale trade at Tattersalls Ireland on Wednesday with Aiden and Olly Murphy snapping up two of the most expensive geldings to go through the ring, including the Doctor Dino (Fr) sale-topper at €250,000. Leading bloodstock agent Aiden and his son Olly, who is based at Warren Chase Stables in England, also splashed out €200,000 on a Saint Des Saints (Fr) gelding that was consigned by Moanmore Stables. The pair's total spend on day one was just shy of...