Nurlan Bizakov's gelding won at Windsor last month and stepped up on that to win again under Freddie Tylicki.
Freddie made every yard of the running and his mount seemed at ease on Epsom's qurky undulations. He quickened clear inside the closing stages to win by eight lengths.
Roger said: "Taraz continues to improve with racing. There wasn't much strength in depth to the field but he has done it very well."
Taraz on Warren Hill