The Irishman's son, John Patrick Magnier, is due to ride the much-fancied Rhinestone Cowboy in the Smurfit Champion Hurdle, the big race on the opening day. In other circumstances it might be seen as a dream ride for the 20-year-old amateur. But, in the heated atmosphere generated by the row over Rock Of Gibraltar, it seems an unusual move, with the youngster branded a potential liability in one of racing's most demanding contests.