With none of the horses being pointed toward the May 5 Kentucky Derby working out, it was a routine day on the backside of Churchill Downs on Wednesday.Trainer David Hofmans added Blue Grass Stakes (gr. I) winner Millennium Wind to the list of horses scheduled to work Thursday. The son of Cryptoclearance, who galloped Wednesday under Martin De Rubin, will work five or six furlongs. Millennium Wind has gained weight since the Blue Grass, Hofmans said, "which is a good sign considering the big effort in the Blue Grass." Millennium Wind led throughout to win the 1 1/8-mile race by 5 1/4 lengths.Also galloping Wednesday was Flamingo Stakes (gr. III) winner Thunder Blitz, who had exercise rider Keith Ricks aboard when he went to the track shortly prior to the maintenance break. "It's like I just did 30 pushups today," said Ricks, who was up for the 1 1/2-mile gallop. Ricks said the Holy Bull colt will be asked for more during Thursday's gallop and that he will breeze over the weekend under the watchful eye of trainer Joe Orseno, who is due to arrive in Louisville Wednesday night.Meanwhile, owner Henry Pabst has put the ball back in trainer Niall O'Callaghan's court on the status of Coolmore Lexington Stakes (gr. II) winner Keats. Immediately after the Lexington, the trainer said he would leave a Derby decision up to Pabst. Now, Pabst said O'Callaghan will decide."The decision is up to the horse," said O'Callaghan, noting that a decision will be made next Tuesday or Wednesday. "The horse has to show he's ready. The horse is home, so we don't have to ship him anywhere."Among other Derby contenders, Florida Derby (gr. I) winner Monarchos walked the shedrow and did not go to the track for exercise.Fountain of Youth Stakes winner Songandaprayer also galloped Wednesday, with a workout scheduled for Thursday, and Dollar Bill was schooled in the gate.