He returned to the World Wrestling Federation in June 1994. World Wrestling Federation (1994) Neidhart returned to the WWF at King of the Ring in 1994 as Bret Hart's cornerman for his WWF World Heavyweight Championship match defense against Intercontinental Champion Diesel. After Diesel hit Hart with his Jackknife finisher, Neidhart interfered to prevent the pin, and disqualifying Hart, but allowing him to retain the title. After the match, Diesel and Shawn Michaels beat down Hart, and Neidhart didn't intervene. Later that night, Neidhart reappeared at ringside again during Owen Hart's King of the Ring tournament final against Razor Ramon. He attacked Razor outside the ring, behind the referee's back, before Neidhart throwing Razor back for Hart to elbow drop and pin to become "The King of Harts", turning heel for the first time since 1988. Owen had been feuding with Bret since the Royal Rumble. Neidhart, believing Bret had held Owen back from his potential, sided with Owen, and usually cornering him in matches through the summer. Neidhart claimed he'd only helped Bret keep the WWF World Heavyweight Championship at King of the Ring so Owen could take it from him. This opportunity came in a steel cage match at SummerSlam. Neidhart sat in the third row during the match, behind other Hart family members. After Bret won the match, Neidhart entered the cage, locked it and helped Owen beat him down, while the Hart family members tried to climb over it and save him. Following SummerSlam, Neidhart teamed with Owen to face Bret and Randy Savage/The British Bulldog in a series of tag team bouts. Neidhart joined Owen on Shawn Michaels' team, The Teamsters, to face Razor Ramon and The Bad Guys in an elimination match at Survivor Series. After they eliminated every Bad Guy except Razor, after Michaels inadvertently hit Diesel with the Sweet Chin Music. This caused an argument and the tag team partners split up, before Diesel chased Michaels down the aisle. As the other Teamsters tried to intervene, and all were counted out. Because Diesel and Michaels were WWF Tag Team Champions when they split, the title was vacated and a tournament held. Neidhart and Hart lost to The New Headshrinkers (Fatu and Sionne) in the first round on the December 31 Superstars, by disqualification. By the time it aired, Neidhart had left the WWF. Bret Hart wrote in his autobiography that the original