The title, which had originally been classed as a world title, was downgraded to regional status after All Japan joined the National Wrestling Alliance but retained its status as the top All Japan singles title until 1983. In 1989 Jumbo Tsuruta and Stan Hansen would unify this, the NWA United National Championship and the NWA International Heavyweight title to create the Triple Crown Heavyweight Championship. The original belt remained in use as part of the Triple Crown until 2013, when the three belts were replaced by a single belt. As the original top belt in All Japan, its design formed the front plate of the new belt; the other two belts' designs took the sides.[1]
Baba originally defeats The Destroyer on December 19, 1972 via count out in a decision match. Unsatisfied with the result, Baba decides to earn the championship by winning a series of 10 matches, the last against Bobo Brazil.
Hansen's AWA World Heavyweight Championship was also on the line. The match ended in a disqualification. Because the PWF Championship could be won by disqualification but the AWA Championship could not, Choshu only won the PWF Championship.
The PWF World Heavyweight Championship, NWA International Heavyweight Championship and NWA United National Championship unified to become the Triple Crown Heavyweight Championship.