High Quality Content by WIKIPEDIA articles! The 1972 World Championship Tennis circuit was one of the two rival professional male tennis circuits of 1972. It was organized by World Championship Tennis (WCT). The circuit included twenty-three regular events, and two circuit finals, one taking place in May, counting for the second half of the 1971 season, and the first part of the 1972 season, and a smaller one taking place in November, counting for the second half of the 1972 season.