On a crisp Tuesday morning at Churchill Downs, Kentucky Derby 151 contenders Coal Battle (Coal Front) and Sandman (Tapit) turned in published workouts. Sandman, winner of the GI Arkansas Derby for D.J. Stable, St. Elias Stable, West Point Thoroughbreds and CJ Stables, breezed at 7:15 a.m. (all time Eastern) with trainer Mark Casse's longtime exercise rider Froylan Garcia in the irons. The grey began his work with eighth-mile splits of :13.60 and :26.40 before registering an official final time of :49.60 for four furlongs. The colt galloped out five furlongs...