Norman Stables' Coal Battle (Coal Front) and Junko Kondo's G2 UAE Derby winner Admire Daytona (Jpn) (Drefong) put in half-mile works for the Kentucky Derby over a fast track Tuesday morning at Churchill Downs. Working during the 7:15-7:30 a.m. EST training window reserved for Kentucky Derby and Oaks contenders, Coal Battle was the first to go, clocking a half-mile in :47.80 under Bethany Taylor. Fractions were :12.40, :24.60, :47.80, and out five furlongs in 1:00.80. "I was thrilled with it. He keeps getting better every time he goes out there,"...