1984, he made a third tour of Japan with NJPW. From April to August 1984, Neidhart worked for the Continental Wrestling Association. In August 1984, he moved to Championship Wrestling from Florida, winning the NWA Southern Heavyweight Championship and NWA United States Tag Team Championship. In January 1985, he left Florida to join the World Wrestling Federation. World Wrestling Federation (1985–1992) Hart Foundation (1985–1991) When Stu Hart sold Stampede Wrestling to Vince McMahon, owner of the World Wrestling Federation (WWF), Neidhart and Bret Hart were included in the deal. Initially a singles wrestler, managed by Mr. Fuji, Neidhart debuted on January 21, 1985, in Madison Square Garden, defeating Tony Garea. He wrestled Hart, who had a cowboy gimmick, to a draw twice. Bret, upset with his gimmick, suggested to McMahon that he form a tag team with Neidhart. The new team was dubbed The Hart Foundation and was managed by Jimmy Hart (no relation to Bret). They made their pay-per-view debut at WrestleMania 2, where they were the last two eliminated from a 20-man battle royal by André the Giant. The Hart Foundation won their first WWF World Tag Team Championship on the February 7, 1987, episode of WWF Superstars (taped January 26) from The British Bulldogs (Davey Boy Smith and The Dynamite Kid), with the help of referee Danny Davis, who was continually "distracted" by checking on Dynamite (laid out of the match early by a megaphone shot from Jimmy), allowing the challengers to double-team Smith. Davis was subsequently fired as referee and began wrestling, aligned with The Hart Foundation. They lost the titles on the November 7 episode of Prime Time Wrestling (taped October 27), to Strike Force (Rick Martel and Tito Santana). The Hart Foundation wrestled in another 20-man battle royal at WrestleMania IV. Bad News Brown attacked and eliminated Hart to win. Neidhart eventually joined Bret's side in the feud with Brown causing a rift between the team and manager Jimmy Hart. This led them to fire him and before starting a feud with The Fabulous Rougeau Brothers. In the fall of 1988, Jimmy Hart began managing the Rougeaus. The Hart Foundation unsuccessfully challenged Demolition (Ax and Smash) for the tag title at the 1988 SummerSlam, when Ax hit Hart with Jimmy Hart's megaphone for the pin (Hart accompanied Demolition's manager, Mr. Fuji, solely to further his feud with the challengers). The Hart Foundation continued feuding