AIDAN O'BRIEN will use blinkers on So You Think in the Breeders' Cup Classic tomorrow as he feels the giant Australian import is getting too relaxed in his races.
Winner of three Group Ones since moving to O'Brien's Ballydoyle stables, he has met with defeat in his last two races, the Prix de l'Arc de Triomphe at Longchamp and the Champion Stakes at Ascot.
But O'Brien believes he could run a huge race at Churchill Downs if he adapts to the dirt surface, in a race where he will be the only European challenger.
"The reason he is wearing blinkers is because of the way he has run in his last three starts, especially when he won the Irish Champion Stakes when he appeared just to do enough at the end," said O'Brien.
"We saw in Leopardstown that he was going to the front and waiting and he was just too relaxed.
"We put blinkers on him the other day and Joseph (O'Brien) rode him in a canter and he said the horse felt more attentive with them on. If he handles the surface the blinkers might make a big difference at the end."