Clark Graebner is a retired American professional tennis player.
Michael I. Belkin is a former Canadian No. 1 tennis player.
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.
Andrés Gimeno defeated Patrick Proisy in the final, 4–6, 6–3, 6–1, 6–1 to win the men's singles tennis title at the 1972 French Open. This was his first and only major title and, at the age of 34, he became the oldest first-time major champion in the Open Era.
The 1982 Volvo Grand Prix was a professional tennis circuit held that year. It incorporated the four grand slam tournaments, the Grand Prix tournaments. The circuit was administered by the Men's International Professional Tennis Council (MIPTC). On 30 April 1981 World Championship Tennis (WCT) announced its withdrawal from the Grand Prix circuit, which it had been incorporated into since 1978, and the re-establishment of its own tour calendar for the 1982 season. To counter the threat of player leaving the Grand Prix tour for the WCT the MIPTC introduced a mandatory commitment to play at least 10 Grand Prix Super Series tournaments.
The 1980 Volvo Grand Prix was a men's professional tennis circuit held that year. It incorporated the four grand slam tournaments, the Grand Prix tournaments. The Grand Prix circuit is a precursor to the ATP Tour.
The 1979 Colgate-Palmolive Grand Prix was a professional tennis circuit held that year. It consisted of four Grand Slam tournaments, the Grand Prix tournaments and the Nations Cup, a team event.
The 1978 Colgate-Palmolive Grand Prix was a professional tennis circuit held that year. It consisted of four Grand Slam tournaments, the Grand Prix tournaments and the Nations Cup, a team event. In addition eight World Championship Tennis (WCT) tournaments, a separate professional tennis circuit held from 1971 through 1977, were incorporated into the Grand Prix circuit. The 28 tournaments with prize money of $175,000 or more formed the Super Series category. Jimmy Connors won 10 of the 84 tournaments which secured him the first place in the Grand Prix points ranking. However he did not play enough tournaments (13) to qualify for largest share ($300,000) of the bonus pool, which instead went to third–ranked Eddie Dibbs.
The 1973 Commercial Union Assurance Grand Prix was a tennis circuit administered by the International Lawn Tennis Federation (ILTF) which served as a forerunner to the current Association of Tennis Professionals (ATP) World Tour and the Women's Tennis Association (WTA) Tour. The circuit consisted of the four modern Grand Slam tournaments and open tournaments recognised by the ILTF. This article covers all tournaments that were part of that year's Men's Grand Prix. Bonus points were awarded to players who were nominated to play in certain 1973 Davis Cup ties and who miss tournaments through competing in those ties. The Commercial Union Assurance Masters is included in this calendar but did not count towards the Grand Prix.
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 Pepsi-Cola ILTF Grand Prix was a tennis circuit administered by the International Lawn Tennis Federation (ILTF) which served as a forerunner to the current Association of Tennis Professionals (ATP) World Tour and the Women's Tennis Association (WTA) Tour. It was the inaugural edition of the Grand Prix circuit and consisted of men's tournaments recognised by the ILTF. The creation of the Grand Prix circuit, on an experimental basis during its first year, was announced in April 1970 by the president of the ILTF, Ben Barnett. It was the brainchild of Jack Kramer, former tennis promoter and winner of the Wimbledon and US championships, and was aimed at countering the influence of commercial promoters, particularly Lamar Hunt and his World Championship Tennis circuit and George MacCall's National Tennis League.
The 1971 Stockholm Open was a tennis tournament played on hard courts and part of the 1971 Pepsi-Cola Grand Prix and took place in Stockholm, Sweden. The tournament was held from November 1 through November 7, 1971. Stan Smith and Tom Gorman defeated Arthur Ashe and Bob Lutz, 6–4, 6–3, in the final.
The 1971 British Hard Court Championships was a combined men's and women's tennis tournament played on outdoor clay courts at The West Hants Club in Bournemouth, England. The event was part of the 1971 Pepsi-Cola Grand Prix and categorized as B class. The tournament was held from 16 to 22 May 1971. Gerald Battrick and Margaret Court won the singles titles.
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.
Arthur Ashe and Marty Riessen were the defending champions but none could compete this year, as both players were banned for the Grand Prix tournaments during the dispute between the ILTF and the WCT.
John Newcombe and Tom Okker were the defending champions but both players chose not to participate.
Ilie Năstase and Ion Țiriac were the defending champions but they withdrew from the tournament.
The 1973 Tanglewood International Tennis Classic was a men's tennis tournament held at Tanglewood Park in Clemmons, North Carolina in the United States that was part of the Grand Prix circuit and categorized as a Group C event. The tournament was played on outdoor clay courts and was held from August 6 until August 12, 1973. It was the third and last edition of the tournament. Second-seeded Jaime Fillol won the singles title, his second at the event after 1971, and earned $5,000 first-prize money.
The 1971 Tanglewood International Tennis Classic was a men's tennis tournament held at Tanglewood Park in Clemmons, North Carolina in the United States that was part of the Grand Prix circuit and categorized as a Group C event. The tournament was played on outdoor clay courts and was held from July 19 through July 25, 1971. It was the inaugural edition of the tournament and unseeded Jaime Fillol won the singles title and earned $5,000 first-prize money.
Ilie Năstase (4) 
Stan Smith (4)
