 In June 1990, while still working for the PNW, Adams debuted in the World Wrestling Federation (WWF) as Crush, the third member of the WWF World Tag Team Championship team Demolition. With Adams joining Demolition, the stable exercised the Freebird Rule allowing any combination of the three to defend the tag team title, which allowed Crush to become a World Tag Team Champion without being involved in the match where the team won the title (Demolition had begun their third reign as champions at Wrestlemania VI in April 1990 before Adams even debuted for the WWF). At the SummerSlam pay-per-view in 1990, Demolition, with new member Adams, lost the Tag Team title to The Hart Foundation in a two out of three falls match with Adams getting pinned for the final fall to lose the title. After SummerSlam, Demolition resumed an earlier feud with The Legion of Doom. Adams continued to perform as part of Demolition until after WrestleMania VII where he and Smash lost to Genichiro Tenryu and Koji Kitao. After WrestleMania, the WWF decided to disband Demolition as a team.
