A contract dispute over simulcasting revenue between the Thoroughbred Owners of California and tracks owned by Churchill Downs led the owners' group to withdraw permission to send the Santa Anita betting signal on Monday to at least two major Churchill-owned venues, officials of Santa Anita and the owners' group said.
The simulcasting networks at Arlington Park, near Chicago, and Fair Grounds in New Orleans were cut off, as were satellites linked with those racetracks. The extent of the blackout to other Churchill-owned tracks or simulcasting networks was not immediately known.