The ILTF Grand Prix tennis circuit was a professional tennis tour for male players that existed from 1970 to 1989. The Grand Prix and World Championship Tennis (WCT) were the two predecessors to the current tour for male players, the ATP Tour, with the Grand Prix being more prominent.
World Championship Tennis (WCT) was a tour for professional male tennis players established in 1968 and lasted until the emergence of the ATP Tour in 1990. A number of tennis tournaments around the world were affiliated with WCT and players were ranked in a special WCT ranking according to their results in those tournaments.
The 1972 Rotterdam Indoors was a men's tennis tournament played on indoor carpet courts. It was the inaugural edition of the event known that year as the Rotterdam Indoors, and was part of the 1972 World Championship Tennis circuit. It took place at the Rotterdam Ahoy indoor sporting arena in Rotterdam, Netherlands, from 12 November through 18 November 1972. Second-seeded Arthur Ashe won the singles title.
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.
The 1972 Swedish Pro Tennis Championships was a men's tennis tournament played on indoor carpet courts. It was the 1st edition of Swedish Pro Tennis Championships, and was part of the 1972 World Championship Tennis circuit. It took place at the Scandinavium in Gothenburg, Sweden, from 30 October until 5 November 1972.
The 1971 U.S. Professional Indoor was a WCT and Virginia Slims Circuit tennis tournament played on indoor carpet courts. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the fourth edition of the tournament and was held from February 9 through February 14, 1971. John Newcombe and Rosie Casals won the singles titles.
The 1972 U.S. Professional Indoor was a men's tennis tournament played on indoor carpet courts. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States that was part of the 1972 World Championship Tennis circuit. It was the fifth edition of the tournament and was held from February 8 through February 13, 1972. Total attendance for the tournament was 57,282. First-seeded Rod Laver won the singles title, his third at the event after 1969 and 1970.
The 1974 U.S. Professional Indoor was a men's tennis tournament that was part of the WCT circuit and played on indoor carpet courts at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the seventh edition of the tournament and was held from January 21 through January 27, 1974. Sixth-seeded Rod Laver won the singles title, his fourth at the event after 1969, 1970 and 1972.
The 1971 World Championship Tennis Finals was a men's tennis tournament played on indoor Sportface carpet courts. It was the first edition of the WCT Finals and the concluding event of the 1971 World Championship Tennis circuit. The eight top players in ranking points after the initial 20 tournaments of the circuit qualified for the play-off event. The quarterfinals and semifinals were played at the Hofheinz Pavilion in Houston, Texas from November 19 through November 21 while the final, watched by 8,200 spectators, was played at the Memorial Auditorium in Dallas, Texas, United States on November 26. Ken Rosewall win the event and the accompanying $50,000 first-prize money. Neil Armstrong presented the prizes.
The 1987 WCT Finals was a season-ending men's tennis tournament played on indoor carpet courts. It was the 17th edition of the WCT Finals and was part of the 1987 Nabisco Grand Prix. It was played at the Reunion Arena in Dallas, Texas in the United States from April 7 through April 13, 1987. The best eight players on the Grand Prix circuit qualified for the tournament. Winners of a Grand Slam tournament automatically qualified. Unseeded Miloslav Mečíř won the title.
The 1972 Commercial Union Assurance Grand Prix was a professional tennis circuit held that year and organized by the International Lawn Tennis Federation (ILTF). It consisted of 33 Grand Prix tournaments in different categories including three of the four Grand Slam tournaments and was followed by a season-ending Masters tournament. The circuit ran from February through November.
The 1970 season of the World Championship Tennis (WCT) circuit was one of the two rival professional male tennis circuits of 1970. It was organized by World Championship Tennis (WCT).
The 1981 Monterrey WCT was a men's tennis tournament played on indoor carpet courts in Monterrey, Mexico. The event was part of the WCT Tour which was incorporated into the 1981 Volvo Grand Prix circuit. It was the third edition of the tournament and was held from January 19 through January 25, 1981. Fourth-seeded Johan Kriek won the singles title.
The 1971 Washington Star International was a men's tennis tournament and was played on outdoor clay courts. The event was the third edition of the tournament and was part of both the 1971 Grand Prix circuit and 1971 World Championship Tennis circuit. It was held in Washington, D.C., United States from July 12 through July 18, 1971. Ken Rosewall won the singles title and earned a $10,000 first prize.
The 1978 Mexico City WCT was a men's tennis tournament played on indoor carpet courts in Mexico City, Mexico. The event was part of the World Championship Tennis series of tournaments that were incorporated into the 1978 Grand Prix circuit. It was the third edition of the tournament and was held from 30 January until 5 February 1978. First-seeded Raúl Ramírez won the singles title, his second at the event after 1976.
The 1972 Fidelity WCT Tournament, also known as the Richmond WCT, was a men's professional tennis tournament that was part of the Group A of the 1972 World Championship Tennis circuit. It was held on indoor carpet courts at the Richmond Coliseum in Richmond, Virginia in the United States. It was the seventh edition of the tournament and was held from February 2 through February 6, 1972. First-seeded Rod Laver won the singles title and earned $10,000 first-prize money.
The 1972 Tokyo WCT, was a men's tennis tournament played on indoor hard courts at the National Tennis Stadium in Tokyo, Japan that was part of the 1972 World Championship Tennis circuit. It was the inaugural edition of the tournament and was held from 4 October through 7 October 1972. Ken Rosewall won the singles title and the accompanying $10,000 first prize money.
The 1972 Rothmans International Vancouver, also known as the Vancouver WCT, was a men's professional tennis tournament that was part of the 1972 World Championship Tennis circuit. It was held on indoor carpet courts at the PNE Agrodome in Vancouver, British Columbia in Canada. It was the third edition of the tournament and was held from 15 October through 22 October 1972. First-seeded John Newcombe won the singles title and earned $10,000 first-prize money.
The 1971 Rothmans International Vancouver, also known as the Vancouver WCT, was a men's professional tennis tournament that was part of the 1971 World Championship Tennis circuit. It was held on indoor carpet courts at the PNE Agrodome in Vancouver, British Columbia in Canada. It was the second edition of the tournament and was held from 3 October through 11 October 1971. Fourth-seeded Ken Rosewall won the singles title and earned $10,000 first-prize money.
The 1971 Rothmans International Quebec, also known as the Quebec International Open or Quebec WCT, was a men's professional tennis tournament that was part of the 1971 World Championship Tennis circuit. It was held on indoor carpet courts at Laval University in Quebec City, Quebec in Canada. It was the inaugural edition of the tournament and was held from 26 July through 1 August 1971. Tom Okker won the singles title and earned $10,000 first-prize money.
Jan Leschly 
Mike Sangster 
Manuel Orantes 
Cliff Richey 
Željko Franulović 
Ilie Năstase 
Roy Emerson 
Thomaz Koch 
Jan Kodeš 
Tom Okker 
