The stewards at Charles Town Races on Wednesday issued a ruling that will not impose penalties against the licensure of trainer Curtis Bass after deeming that a "trace level" of a cocaine metabolite detected in a $5,000 claiming mare who won Apr. 10 was the result of "inadvertent exposure" to that drug. It's the second time in eight months that the Charles Town stewards have made that type of determination on a cocaine positive, disqualifying the winning horse but not penalizing the trainer. Although West Virginia's Thoroughbred medication testing and...