The 1973 South American Open, also known as the Argentine Open, was a men's tennis tournament that was played on outdoor clay courts in Buenos Aires, Argentina. The event was part of the 1973 Commercial Union Assurance Grand Prix circuit, categorized as Group B, and was held from 19 November through 25 November 1973. Guillermo Vilas won the singles title after first-seeded Björn Borg had to retire in the final after injuring his hand when he ran into the umpire's stand. He earned $7,000 first-prize money.
The 1974 South American Championships was a men's tennis tournament for male players that was part of the 1974 Commercial Union Assurance Grand Prix. It was played in Buenos Aires, Argentina, and held from 18 November through 24 November 1974. First-seeded Guillermo Vilas won the singles title.
The 1975 South American Open also valid as the ATP Buenos Aires was a men's Grand Prix tennis circuit tournament played on outdoor clay courts in Buenos Aires, Argentina. The event was part of the 1975 Grand Prix circuit and was held from 10 November through 16 November 1975. First-seeded Guillermo Vilas won the singles title.
The second 1977 ATP Buenos Aires was a men's tennis tournament held in Buenos Aires, Argentina that was part of the Grand Prix circuit and played on outdoor clay courts. It was the 11th edition of the tournament and was held from 21 November through 27 November 1977. First-seeded Guillermo Vilas won the singles title.
The 1979 South American Open also known as the ATP Buenos Aires was a men's Grand Prix tennis circuit tournament held in Buenos Aires, Argentina that was played on outdoor clay courts. It was the 13th edition of the tournament and was held from 19 November through 25 November 1979. 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 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 1974 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Cricket Skating and Curling Club in Toronto in Canada that was part of the 1974 Commercial Union Assurance Grand Prix and of the 1974 WTA Tour. The tournament was held from August 12 through August 18, 1974.
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 1974 Dutch Open was a men's tennis tournament staged at 't Melkhuisje in Hilversum, Netherlands that was part of the Group C tier of the 1974 Commercial Union Assurance Grand Prix circuit. The tournament was played on outdoor clay courts and was held from 21 July until 28 July 1974. It was the 17th edition of the tournament. First-seeded Guillermo Vilas won the singles title and earned $5,000 first-prize money. For the first time no women's events were held.
The 1974 Aryamehr Cup was a men's professional tennis tournament played on outdoor clay courts at the Imperial Country Club in Tehran in Iran. The event was part of the 1974 Commercial Union Assurance Grand Prix as a Group AA category event. It was the third edition of the tournament was held from 21 October through 27 October 1974. Guillermo Vilas won the singles title and the trophy was presented by Shah Mohammad Reza Pahlavi.
The 1974 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 29th edition of the tournament and was held from 8 July through 14 July 1974. The tournament was part of the Grand Prix tennis circuit and categorized in Group B. Guillermo Vilas won the singles title and the accompanying $8,000 prize money.
The 1975 Louisville Open, also known as the First National Tennis Classic, was a men's tennis tournament played on outdoor clay courts at the Louisville Tennis Center in Louisville, Kentucky in the United States. It was the sixth edition of the tournament and was held from July 28 through August 5, 1975. The tournament was part of the Grand Prix tennis circuit and categorized in Group AA. The singles final was delayed by one day due to rain and was won by defending champion Guillermo Vilas who received the $16,000 first prize money. The doubles final was not played due to rain and the prize money was shared.
The 1974 Washington Star International was a men's tennis tournament and was played on outdoor clay courts. It was categorized as an AA tournament and was part of the 1974 Grand Prix circuit. It was the sixth edition of the tournament and was held at the Washington Tennis Stadium in Washington, D.C. from July 23 through July 29, 1974. Eleventh-seeded Harold Solomon won the singles title and earned $16,000 prize money in a final that was played over two days due to rain.
The 1980 Italian Open was a combined men's and women's tennis tournament that was played on outdoor clay courts. For the first time in the history of the tournament the men and women competed in different locations. The men's event was held at the traditional location of Foro Italico in Rome, while the women played in Perugia. It was the 37th edition of the tournament. The men's tournament was part of the 1980 Volvo Grand Prix while the women's tournament was part of the Colgate Series. The women's event was played from 5 May through 11 May 1980 while the men's event was organized from 19 May through 25 May 1980. First-seeded Guillermo Vilas, runner-up in 1976 and 1979, won the men's singles title and the accompanying $28,000 first-prize money. The women's singles title was won by first-seeded Chris Evert-Lloyd, her third Italian Open title after 1974 and 1975.
The 1977 Louisville Open, also known as the Louisville International Tennis Classic, was a men's tennis tournament played on outdoor clay courts at the Louisville Tennis Center in Louisville, Kentucky, United States. It was the eighth edition of the tournament and was held from 25 July through August 1, 1977. The tournament was part of the Grand Prix tennis circuit and categorized as a Four Star event. The singles final was won by first-seeded Guillermo Vilas who received $20,000 first prize money. It was Vilas' third title win at the tournament after 1974 and 1975.
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 1977 Mutual Benefit Life Open, also known as the South Orange Open, was a men's tennis tournament played on outdoor clay courts at the Orange Lawn Tennis Club in South Orange, New Jersey in the United States. It was classified as a Two Star category tournament and was part of the 1977 Grand Prix circuit. It was the eighth edition of the tournament on the Grand Prix circuit and was held from July 31 through August 8, 1977. First-seeded Guillermo Vilas 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 1980 Campionati Internazionali di Sicilia, also known as the Palermo Grand Prix or the Sicilian Open, was a men's tennis tournament played on outdoor clay courts in Palermo, Italy that was part of the 1980 Volvo Grand Prix. It was the second edition of the tournament and took place from 8 September until 14 September 1980. First-seeded Guillermo Vilas won the singles title.
Guillermo Vilas [1] 
Charlie Pasarell / 
