Aidan O'Brien, whose top colt Johannesburg is co-third favourite for Saturday's Kentucky Derby, could miss the race due to flu. O'Brien's doctor is reluctant to allow him to undertake the flight to Louisville, according to a statement released by the Churchill Downs track on Thursday.
A final decision on his travel plans will be made Friday morning from his Ballydoyle stables. Johannesburg, listed as a 6-1 chance, and O'Brien's other entry Castle Gandolfo (20-1) are scheduled to remain at Keeneland Race Course in Lexington until Saturday morning when they will be transported to Churchill Downs. Travelling head lad Pat Keating is supervising the pair.
Filed by Sinéad Kissane
