Great Warrior, winner of the Pomona Derby at Fairplex Park in his last start on Sept. 24, drew the rail for Saturday's Gr. II Oak Tree Derby at Santa Anita. Omar Berrio is back aboard the colt by Leroidesanimaux in a field of 14. The 3-year-olds will be racing a mile and an eighth over the turf course and post time is set at 8:08 EDT.