LOUISVILLE, Ky. - The sun was shining bright on the old Kentucky home of the Kentucky Derby on Saturday, when Churchill Downs began its spring meeting with plenty of action in the morning and the afternoon on a warm, summer-like day. The day here commenced with workouts for five of the 20 horses scheduled to run in the 135th Derby next Saturday and concluded with the Grade 3, $100,000 Derby Trial, which has become more of a trial in recent years for the Preakness Stakes, the second leg of the Triple Crown.