THE unbeaten Bow Echo produced the performance of the season so far when winning the 2000 Guineas, but he has a rival now for that accolade in the form of Constitution River, who may well be the most talented three-year-old at Ballydoyle after his demolition of the Dee Stakes field at Chester.

His participation in the Derby is not yet confirmed but, if he were to line up, Ryan Moore would have a very difficult decision to make between him and Benvenuto Cellini. Does he go with the unfettered potential laced with stamina doubts of Constitution River, or play it safe with Benvenuto Cellini, who last week looked to be ready-made for the Derby?