Dear Editor: In your article, "Arlington Horsemen Beg for Help," published Aug. 17, it is was stated by President Michael Campbell of the Illinois Thoroughbred Horsemen's Association (ITHA) at the public comment period before the Illinois Racing Board, that Churchill Downs may not sell Arlington Park to the highest bidder in order to avoid competition. Mr. Cambell said, it is "the worst-kept secret in Illinois--and we all know it--is that Churchill Downs and [that corporation's business entity at] Rivers Casino is attempting to eliminate horse racing at Arlington Park because...