Irish champion trainer has four declared for big raceFive horses in
France tested positive for zilpaterolThe run-up to Sunday’s spectator-less Prix de l’Arc de Triomphe meeting in
Paris was thrown into further confusion on Friday evening when it emerged that Aidan O’Brien’s four runners have been fed with a product that could be contaminated with a banned substance.
Related: Enable will need to fight in her bid for Arc de Triomphe immortality | Greg Wood