https://community.betfair.com/horse_racing/go/thread/view/94102/28623155/aidan-o-brien-must-be-thinking-lets-make-it-a-level-playing-fieldAidan O'Brien says Breeders' Cup runners will probably run on medication at Churchill Downs.https://community.betfair.com/horse_racing/go/thread/view/94102/28623155/aidan-o-brien-must-be-thinking-lets-make-it-a-level-playing-field?post_id=511697169#511697169Aidan O'Brien says Breeders' Cup runners will probably run on medication at Churchill Downs.Wed, 26 Oct 2011 08:15:34 -0500