The 1974 Commercial Union Assurance Grand Prix was a professional 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. The season-ending Commercial Union Assurance Masters and Davis Cup Final are included in this calendar but did not count towards the Grand Prix ranking.
The 1976 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 31st edition of the tournament and was held from 4 July through 11 July 1976. The tournament was part of the Grand Prix tennis circuit. Raúl Ramírez won the singles title.
The 1972 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 64th edition of the event and was part of the 1972 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 5 June through 11 June 1972. Manuel Orantes and Helga Masthoff won the singles titles.
The 1971 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 63rd edition of the tournament. The event was part of the 1971 Pepsi-Cola Grand Prix circuit and categorized as a B Class tournament. It took place at the Am Rothenbaum in Hamburg, West Germany, from 17 May through 23 May 1971. Andrés Gimeno and Billie Jean King won the singles titles.
The 1974 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 66th edition of the event and was part of the 1974 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 20 May through 26 May 1974. Eddie Dibbs and Helga Masthoff won the singles titles.
The 1975 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 30th edition of the tournament and was held from 7 July through 13 July 1975. The tournament was part of the Grand Prix tennis circuit and categorized in Group B. Ken Rosewall won the singles title and the accompanying $8,000 prize money.
The 1975 Philta International Championships was a men's tennis tournament played an outdoor hard courts in Manila, Philippines. It was the third edition of the tournament and was held from 27 October through 2 November 1975. The tournament was part of the Grand Prix tennis circuit and categorized in Group A. Ross Case won the singles title and the $12,000 first prize money.
The 1974 Pacific Coast Open, also known by its sponsored name Fireman's Fund International, was a men's tennis tournament that was part of the Grade AA category of the 1974 Grand Prix circuit. The event was played on indoor hard courts at the Cow Palace in San Francisco, United States. It was the first time the venue was used for the tournament which was the 86th edition and ran from September 24 through September 30, 1974. Unseeded Ross Case won the singles title and the accompanying $16,000 first prize money and 80 Grand Prix points.
The 1973 Washington Star International was a men's tennis tournament that was played on outdoor clay courts at the Washington Tennis Stadium in Washington, D.C. The event was categorized as a Grade A tournament and was part of the 1973 Grand Prix circuit. It was the fifth edition of the tournament and was held from July 23 through July 29, 1973, and was the first event on the US Tour leading up to the 1973 US Open. Third-seeded Arthur Ashe won the singles title and $11,000 prize money.
The 1973 New Zealand Open, also known as Benson and Hedges Open for sponsorship reasons, was a combined men's and women's professional tennis tournament held at the Stanley Street grounds in Auckland, New Zealand. It was an independent event, i.e. not part of the 1973 Grand Prix or 1973 World Championship Tennis circuit. It was the sixth edition of the tournament and was played on outdoor grass courts and was held from 8 to 14 January 1973. Onny Parun and Evonne Goolagong won the singles titles.
The 1973 German Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 66th edition of the event and was part of the 1973 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 11 June until 17 June 1973. Eddie Dibbs and Helga Masthoff won the singles titles.
The 1973 Berlin Open was a men's tennis tournament staged in Berlin, West Germany. The men's event was part of the Grand Prix circuit and categorized in Group C. The tournament was played on outdoor clay courts and was held from 4 June until 11 June 1973. It was the inaugural edition of the tournament and Hans-Jürgen Pohmann won the singles title.
The 1976 Berlin Open, also known as the Berlin Grand Prix, was a men's tennis tournament staged in Berlin, West Germany that was part of the Grand Prix circuit and categorized as a One star event. The tournament was played on outdoor clay courts and was held from 14 June until 20 June 1976. It was the second edition of the tournament and unseeded Víctor Pecci won the singles title.
The 1978 Berlin Open, also known as the International Championships of Berlin, was a men's tennis tournament staged in Berlin, West Germany that was part of the Grand Prix circuit. The tournament was played on outdoor clay courts and was held from 19 June until 25 June 1978. It was the fourth edition of the tournament and fifth-seeded Vladimír Zedník won the singles title.
The 1972 Rainier International Tennis Classic was a men's tennis tournament staged Seattle, Washington 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 hard courts and was held from September 11 until September 17, 1972. It was the inaugural edition of the tournament and Ilie Năstase won the singles title.
The 1979 South Pacific Classic was an Association of Tennis Professionals men's tournament held on outdoor grass courts at the Milton Courts in Brisbane, Queensland, Australia that was part of the 1979 Grand Prix tennis circuit. It was the sixth edition of the tournament and was held from 8 October until 14 October 1979. Unseeded Phil Dent won the singles title.
The 1994 Topper Open was a men's tennis tournament held in Montevideo, Uruguay and played on outdoor clay courts. The tournament was part of the World Series circuit of the 1994 ATP Tour. It was the inaugural edition of the tournament and was held from 31 October through 6 November 1994. First-seeded Alberto Berasategui won the singles title.
The 1974 Philippine Championships was a men's tennis tournament played on outdoor clay courts in Manila, the Philippines. It was the second edition of the event and was held from 11 November through 17 November 1974. The tournament was part of the Group B tier of the Grand Prix tennis circuit. Ismail El Shafei won the singles title.
The 1976 Philippine Open was a men's tennis tournament played an outdoor clay courts in Manila, Philippines. It was the fourth edition of the tournament and was held from 15 November through 21 November 1976. The tournament was part of the Grand Prix tennis circuit and categorized as Two Star. Sixth-seeded Brian Fairlie won the singles title and the $10,500 first prize money.
The 1978 Philta International was a men's tennis tournament played an outdoor clay courts in Manila, Philippines. It was the sixth edition of the tournament and was held from 20 November through 26 November 1978. The tournament was part of the Grand Prix tennis circuit. Eighth-seeded Yannick Noah won the singles title and earned $12,750 first-prize money.
Ross Case [1] 
Marcello Lara / 
Sherwood Stewart [2] 