In 1984, McMahon's WWF purchased controlling interest in GCW from a number of its co-owners (including Barnett and brothers Jack and Jerry Brisco), thus gaining control of GCW's flagship Saturday night time slot on TBS. This tactic—co-opting the time slots of rival territories in their own "backyard"/local TV markets—was part of the WWF's national expansion strategy. To McMahon's surprise, however, the move backfired with TBS. When the WWF aired its first show on TBS on July 14, replacing "World Championship Wrestling", viewer backlash was severe, as the show's Southern fans were incensed to see their beloved stars suddenly replaced—without advance notice—by an "invading force" of wrestlers from "up North," an event that has since become known in pro wrestling lore as Black Saturday. In response to the ensuing deluge of complaints, TBS granted an upstart promotion called "Championship Wrestling from Georgia" (backed by holdout GCW shareholder and NWA member Fred Ward and former GCW wrestler/booker Ole Anderson) an early Saturday morning time slot so that the local stars could still be seen. Championship Wrestling from Georgia's television show (which had the same name as the promotion itself), along with that of Bill Watts's Mid-South Wrestling (to whom Turner had also granted a time slot), easily surpassed the ratings for the WWF broadcast, which only featured clips and wrestler promos instead of original matches. The steep decline in ratings for the Saturday evening WWF show, and viewers clamoring for GCW's return, began to make the WWF's move a money-losing one. Eventually, McMahon cut his losses and sold the time slot to Crockett for $1 million. Although this gave Crockett vital national exposure, it also allowed McMahon to finance his own marquee wrestling event, WrestleMania. This chain of events was critical in Turner's eventual decision to purchase JCP and form World Championship Wrestling (WCW) in 1988.