Guillermo Vilas is an Argentine former professional tennis player. Vilas was the world No. 1 of the Grand Prix seasons in 1974, 1975 and 1977. He won four major titles, the year-end championships, and 62 ATP titles overall. World Tennis, Agence France-Presse and Livre d'or du tennis 1977, among other rankings and publications, rated him as world No. 1 in 1977. In the computerized ATP rankings, he peaked at No. 2 in April 1975, a position he held for a total of 83 weeks, although some have argued that Vilas should have been ranked No. 1 for at least 10 weeks, particularly in 1977 when he won 2 majors. He was inducted into the International Tennis Hall of Fame in 1991, two years after his first retirement.
John McEnroe defeated Vitas Gerulaitis in the final, 7–5, 6–3, 6–3 to win the men's singles tennis title at the 1979 US Open. It was his first major singles title.
Defending champion Björn Borg defeated Guillermo Vilas in the final, 6–2, 6–3, 6–4 to win the men's singles tennis title at the 1975 French Open. It was his second French Open title.
Manuel Orantes defeated the defending champion Jimmy Connors in the final, 6–4, 6–3, 6–3 to win the men's singles tennis title at the 1975 US Open. Orantes became the first man in the Open Era to win the US Open after saving match points en route, saving five against Guillermo Vilas in the semifinals.
Guillermo Vilas defeated the defending champion Jimmy Connors in the final, 2–6, 6–3, 7–6(7–4), 6–0 to win the men's singles tennis title at the 1977 US Open.
The 1979 Volvo International was a men's professional tennis tournament played on outdoor clay courts in North Conway, New Hampshire in the United States and was part of the 1979 Colgate-Palmolive Grand Prix. It was the 7th edition of the tournament and was held from July 30 through August 5, 1979. Fourth-seeded Harold Solomon 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 18th edition of the tournament, and first-seeded Guillermo Vilas won his second consecutive singles title at the event.
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 Torneo Godó or Trofeo Conde de Godó was a men's tennis tournament that took place on outdoor clay courts at the Real Club de Tenis Barcelona in Barcelona, Spain. It was the 22nd edition of the tournament and was part of the 1974 Grand Prix circuit. It was held from 14 October through 20 October 1974. Fourth-seeded Ilie Năstase won his second consecutive singles title at the event.
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 Italian Open was a combined men's and women's tennis tournament that was played by men on outdoor clay courts at the Foro Italico in Rome, Italy. The men's tournament was part of the 1974 Commercial Union Assurance Grand Prix circuit while the women's tournament was part of the Women's International Grand Prix circuit. The tournament was held from 26 May through 3 June 1974. The singles titles were won by third-seeded Björn Borg and first-seeded Chris Evert.
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 1979 Italian Open was a combined men's and women's tennis tournament that was played on outdoor clay courts at the Foro Italico in Rome, Italy. It was the 36th edition of the tournament. The men's tournament was part of the 1979 Colgate-Palmolive Grand Prix while the women's tournament, held separately for the first time, was part of the Colgate Series. The women's event was played from 7 May through 13 May 1979 while the men's event was organized from 21 May through 27 May 1979. After a final that lasted five hours and nine minutes second-seeded Vitas Gerulaitis won the men's singles title, his second Italian Open title after 1977, and the accompanying $28,000 first-prize money. The women's singles title was won by third-seeded Tracy Austin. In the semifinal Austin defeated compatriot Chris Evert-Lloyd which ended Evert-Lloyd's record 125-match winning streak on clay that had started in August 1973.
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 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 1979 Washington Star International was a men's tennis tournament and was played on outdoor clay courts. The event was part of the 1979 Grand Prix circuit. It was the 11th edition of the tournament and was held at Rock Creek Park in Washington, D.C. from July 16 through July 22, 1979. First-seeded Guillermo Vilas won the singles title, his third at the event after 1975 and 1977.
The 1977 Raquette d'Or was a men's tennis tournament staged in Aix-en-Provence, France that was part of the One star category of the 1977 Grand Prix circuit. The tournament was played on outdoor clay courts and was held from 26 September until 2 October 1977. It was the inaugural edition of the tournament. Ilie Năstase won the singles title. In a five-set final against Guillermo Vilas he had won the first two sets when Vilas retired in protest of Năstase's use of a spaghetti strung racquet.
The 1974 Torneo Godó – Singles was an event of the 1974 Torneo Godó tennis tournament and was played on outdoor clay courts at the Real Club de Tenis Barcelona in Barcelona, Spain between 14 October and 20 October 1974. The draw comprised 64 players and eight of them were seeded. Fourth-seeded Ilie Năstase was the defending Torneo Godó singles champion and retained the title by defeating third-seeded Manuel Orantes in the final, 8–6, 9–7, 6–3.
Guillermo Vilas [1] 
Bob Lutz / 