Gulfstream Park has denied access to the 10 jockeys who have been banned by three tracks in connection with an investigation being conducted by the Thoroughbred Racing Protective Bureau. Tampa Bay Downs has barred seven riders, Calder has barred two, and Philadelphia Park one.
The investigation is thought to trace to at least one race at Great Lakes Downs in Michigan. Racing officials and the TRPB have declined to comment on the investigation.