The first 1977 ATP Buenos Aires, also known as the River Plate Championships, was an Association of Tennis Professionals men's tennis tournament that was played on outdoor clay courts at the Buenos Aires Lawn Tennis Club in Buenos Aires, Argentina and held from 14 April through 17 April 1977. First-seeded Guillermo Vilas won the singles title.
The 1982 Grand Prix la Serenisima, also known as the Buenos Aires Grand Prix, was an Association of Tennis Professionals men's tennis tournament held in Buenos Aires, Argentina and took place from 1 February through 7 February 1982. It was the 16th edition of the tournament and first-seeded Guillermo Vilas won the singles title.
The 1975 Bavarian Tennis Championships was an men's Grand Prix tennis circuit tournament held in Munich, West Germany. The tournament was played on outdoor clay courts and was held from 7 May though 11 May 1975. Guillermo Vilas won the singles title.
The 1978 Romika Cup was a men's Grand Prix Tennis Circuit tournament held in Munich, West Germany. It was the 62nd edition of the tournament and was held from 23 May through 28 May 1978. It is now part of the ATP Tour. First-seeded Guillermo Vilas won the singles title, his second after 1975.
The 1982 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France that was part of the 1982 Volvo Grand Prix circuit. It was the 76th edition of the tournament and was held from 5 April through 11 April 1982. Second-seeded Guillermo Vilas won the singles title.
The 1983 ABN World Tennis Tournament was a men's tennis tournament played on indoor carpet courts at the Rotterdam Ahoy in the Netherlands. It was part of the 1983 Volvo Grand Prix circuit. It was the 11th edition of the tournament and was held from 14 March through 20 March 1983. Gene Mayer won the singles title.
The 1982 ABN World Tennis Tournament was a tennis tournament played on indoor carpet courts at the Rotterdam Ahoy in the Netherlands. It was part of the 1982 Volvo Grand Prix circuit. It was the 10th edition of the tournament and was held from 15 March through 21 March 1982. Second-seeded Guillermo Vilas won the singles title.
The 1975 Dutch Open was a men's tennis tournament staged at 't Melkhuisje in Hilversum, Netherlands which was part of the Group B tier of the 1975 Grand Prix. The tournament was played on outdoor clay courts and was held from 20 July to 27 July 1975. It was the 19th edition of the tournament, and first-seeded Guillermo Vilas won his second consecutive singles title at the event.
The 1982 South African Open was a men's tennis tournament played on outdoor hard courts in Johannesburg, South Africa that was part of the 1982 Volvo Grand Prix. It was the 79th edition of the tournament and was held from 23 November through 28 November 1982. Vitas Gerulaitis won his second consecutive singles title at the event.
The 1980 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France that was part of the 1980 Volvo Grand Prix circuit. It was the 74th edition of the tournament and was held from 31 March through 6 April 1980. First-seeded Björn Borg won the singles title, his third after 1977 and 1979.
The 1977 Aryamehr Cup was a men's professional tennis tournament played on outdoor clay courts in Tehran in Iran. The event was part of the 1977 Colgate-Palmolive Grand Prix as a Five Star category event. It was the sixth and final edition of the tournament and was held from 3 October through 9 October 1977. Guillermo Vilas won the singles title.
The 1977 Washington Star International was a men's tennis tournament and was played on outdoor clay courts in Washington, D.C., USA. It was part of the 1977 Grand Prix circuit and categorized as a 4 star event. It was the 9th edition of the tournament and was held in Washington, D.C. from July 18 through July 25, 1977. First-seeded Guillermo Vilas won the singles title, his second after 1975, and earned the $20,000 first-prize money. The singles final was delayed for two hours due to rain.
The 1978 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 33rd edition of the tournament and was held from 10 July through 16 July 1978. The tournament was part of the Grand Prix tennis circuit with a total prize money available of $75,000. First-seeded Guillermo Vilas won the singles title, his second at the tournament after 1974.
The 1979 Richmond WCT, also known by its sponsored name United Virginia Bank Classic, was a men's tennis tournament played on indoor carpet courts in Richmond, Virginia in the United States. The event was part WCT Tour which was incorporated into the 1979 Colgate-Palmolive Grand Prix circuit. It was the ninth edition of the tournament and was held from January 29 through February 4, 1979. First-seeded Björn Borg won the singles title.
The 1978 Swiss Indoors was a men's tennis tournament played on indoor hard courts at the St. Jakobshalle in Basel, Switzerland that was part of the 1978 Colgate-Palmolive Grand Prix. It was the 10th edition of the tournament and was held from 24 October through 29 October 1978. First-seeded Guillermo Vilas won the singles title.
The 1981 Washington Star International was a men's tennis tournament and was played on outdoor clay courts. The event was part of the 1981 Grand Prix circuit. It was the 13th edition of the tournament and was held at Rock Creek Park in Washington, D.C. from July 20 through July 26, 1981. Third-seeded José Luis Clerc won the singles title.
The 1983 Torneo Godó or Trofeo Conde de Godó was a men's tennis tournament that took place on outdoor clay courts in Barcelona, Catalonia, Spain. It was the 31st edition of the tournament and was part of the 1983 Grand Prix circuit. It was held from 3 October until 9 October 1983. First-seeded Mats Wilander won his second consecutive singles title at the event.
The 1983 United Virginia Bank Classic, also known as the Richmond WCT, was a men's tennis tournament played on indoor carpet courts in Richmond, Virginia, United States. The event was part of 1983 World Championship Tennis circuit. It was the 13th edition of the tournament and was held from February 7 through February 13, 1983. Second-seeded Guillermo Vilas won the singles title and the $100,000 first-prize money.
The 1982 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor green clay courts at the Longwood Cricket Club in Chestnut Hill, Massachusetts. The event was part of the Super Series of the 1982 Volvo Grand Prix circuit. It was the 55th edition of the tournament and was held from July 12 through July 18, 1982. First-seeded Guillermo Vilas won the singles title.
The 1977 Chilean International was a men's tennis tournament played on outdoor clay courts in Santiago, Chile. It was the second edition of the tournament and was held from 14 November through 20 November 1977. The tournament was part of the 1 Star tier of the Grand Prix tennis circuit. First-seeded Guillermo Vilas won the singles title.
Guillermo Vilas [1] 
Peter McNamara / 
Heinz Günthardt [2] 