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.
The U.S. Pro Indoor (mainly known as such during its run, but formally as the U.S. Professional Indoor Championships, is a defunct professional tennis tournament founded in 1962 as the Philadelphia Invitational Indoor Tennis Championships. The tournament was held in Philadelphia, United States from 1962 to 1998. It played on indoor carpet courts, and indoor hard courts. It was part of the ILTF World Circuit from 1962 to 1967 and again in 1970, the World Championship Tennis circuit in 1968, 1969 and from 1971 to 1977 and the Grand Prix Tour from 1978 to 1989 before being held on the ATP Tour. It was held annually first at the Spectrum, and then at the CoreStates Center. It was originally named the Philadelphia Indoor Open Tournament prior to the open era.
The Düsseldorf Grand Prix or Großer Preis von Düsseldorf was a men's clay court tennis tournament founded in 1905 as a combined event men's and women's called the Düsseldorf International or Internationale Düsseldorf. It remained a joint event until 1969 and was held at the Rochusclub Düsseldorfer Tennisclub in Düsseldorf, Germany until 1977.
The Spanish Open is a defunct WTA Tour affiliated women's tennis tournament founded as a combined men's and women's event called the International Championships of Spain in 1904 in San Sebastian, Spain.
The Moroccan International Championships or Championnats Internationaux Marocains was a men's and women's international clay court tennis tournament founded in 1925 as the Moroccan Championships or Championnats du Maroc. The tournament first held in Casablanca, Morocco. It was held annually until 1974 when it was discontinued as part of the worldwide ILTF Circuit.
The Asian Championships also known as the Asian International Championships or Asian Lawn Tennis Championships was an open international men's and women's grass and clay court tennis tournament founded in 1949 as the International Championships of Asia. The tournament was one of eight official championships of the International Lawn Tennis Federation. It was first played at the Calcutta South Club, Calcutta, India. The international tournament was played at other locations until September 1972 when it was discontinued as part of the ILTF Independent Tour.
The Tamil Union Open Championships also known as the Tamil Union Open was an open international men's and women's clay court tennis tournament founded in 1930 as the Tamil Union Championships. It was first organised by the Tamil Union Cricket & Athletic Club and first played on clay courts in Colombo, Ceylon then later Sri Lanka. The international tournament was played annually until 1973 when it was discontinued as part of the worldwide ILTF Independent Tour.
The North Shore Championships also known as the Seabrook Fowlds North Shore Championships and the North Shore Invitation for women in its final year. was an open international men's and women's grass court tennis tournament founded in 1968. It was first organised by the North Shore Tennis Association and first played at the North Shore Tennis Center, Forrest Hill, Auckland, New Zealand. This international tournament was part of the ILTF World Circuit until 1971 when it was discontinued.
The Philippines Open International Championships and later known as PHILTA International Championships or simply the Philippines Open was an international men's and women's clay then later court tennis tournament founded in 1918 as the Philippine Championships . It was first organised by the Philippine Tennis Association (PhilTA) and first played at the Rizal Memorial Tennis Center, Manila, Philippines. This international tournament was part of the ILTF World Circuit until 1978 when it was discontinued.
The March of Dimes Open also known as the March of Dimes Tennis Tournament was an international men's and women's hardcourt tennis tournament founded in 1955. It was first played at the Kona Kai Club, Shelter Island, San Diego, United States. This international tournament was part of the ILTF World Circuit until 1974 when it was discontinued.
The Marrickville and District Hardcourts was an open international men's and women's hard court tennis tournament founded in 1970. It was first organised by the Marrickville and District Hardcourt Tennis Association and played at the Marrickville Hardcourt Tennis Club, Marrickville in Sydney. This international tournament was part of the ILTF World Circuit until 1972, then the ILTF Independent Tour from 1973 to 1983 when it was discontinued.
The Madison Square Garden Open Tennis Championship also known as the Madison Square Garden Challenge Trophy and New York Indoor was a men's and women's open international indoor carpet court tennis tournament founded in 1968. It was organised by the USNLTA and played at Madison Square Garden, New York City, United States until 1970. This international tournament was part of the ILTF World Circuit until 1970 when it was replaced Clean Air Classic.
The Clean Air Classic and also known as the New York Indoor was a men's and women's open international indoor carpet court tennis tournament founded in 1971. It was organised by the USNLTA with the finals played at Seventh Regiment Armory, New York City, United States until 1972. This international tournament was part of the ILTF Independent Tour, until 1972 when it was discontinued.
The Vanderbilt Indoor Open was a men's and women's open international indoor clay court then later hard court tennis tournament founded in 1967 as the New York Vanderbilt Indoor. It was organised by the Vanderbilt International Racket Club (f.1966) and played at Grand Central Terminal, New York City, United States until 1970. This international tournament was part of the ILTF World Circuit, until 1970 when it was discontinued.
The U.S.S.R. Championships also known as the U.S.S.R. National Championships, or Soviet Championships was a men's and women's closed outdoor clay court, then later hard court tennis tournament founded in 1924 as the Soviet Union Championships. It was organised by the Tennis Federation of the USSR until 1991 when it was discontinued.
The Eastern Indoor Championships also known as the Eastern States Indoor Championships was a men's and women's indoor tennis tournament founded in 1944. It was organized by the Eastern Lawn Tennis Association and was It was originally played on wood courts, then switching later carpet courts later until 1977 when it was discontinued.
The Redcliffe Championships was a men's and women's open tennis tournament founded in 1953, and held at Redcliffe, Queensland, Australia. It was first organised by the Peninsula Tennis Association and originally played on clay courts, then switching later grass courts, then hard courts. It was staged as part of ILTF Australasia Circuit a sub circuit of the ILTF World Circuit until 1983 when it was discontinued.
The New South Wales Hard Court Championships was a men's and women's open tennis tournament founded in 1915, and first held at Dubbo, New South Wales, Australia. It was first organised by the Dubbo District Tennis Association in conjunction with the New South Wales Lawn Tennis Association and was played on clay courts. It was staged as part of ILTF Australasia Circuit a sub circuit of the ILTF World Circuit until 1972, then became part of the ILTF Independent Tour until 1984 and finally part of the Tennis Australia Circuit till 1988 when it was discontinued as a senior event.
The Tournoi de La Châtaigneraie or the La Chataigneraie Tournament was a men's and women's open international clay court tennis tournament founded in 1968. It was organised by the Tennis Club la Chataigneraie and played at La Châtaigneraie, France until 1983. The tournament was part ILTF European Circuit a sub circuit of the ILTF World Circuit until 1972, then became part of the ILTF Independent Tour until it was discontinued.
The Moscow International Championships was a men's and women's open international outdoor tennis tournament founded in 1956. The tournament was organised by the Tennis Federation of the USSR was played on clay courts in Moscow, Soviet Union until 1975.
József Asbóth 
Sergei Andreev
Jiri Javorsky 
Robert Haillet 
Wilhelm Bungert 
Alan Mills 
Sergio Jacobini 
Jan Leschly 
Christiane Mercelis 
Betty Stöve