In 1989, Pillman began wrestling for World Championship Wrestling (WCW), where he was known as Flyin' Brian due to his athletic ability and variety of aerial maneuvers. He held the WCW United States Tag Team Championship with The Z-Man between February 1990 and May 1990. Pillman later feuded with Barry Windham, who he harassed while dressed as the masked Yellow Dog after losing a Loser Leaves WCW (Pillman was eventually reinstated). He also held the short-lived WCW Light Heavyweight Championship
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