Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
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Guillermo Vilas (Champion) -
Wojciech Fibak (Final)
Guillermo Vilas defeated Wojtek Fibak 6–4, 6–3, 6–0 to win the April 1977 ATP Buenos Aires singles competition. Vilas was the defending champion.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Guillermo Vilas (Champion)
Wojciech Fibak (Final)| Final | ||||||||
| 1 | Guillermo Vilas | 6 | 6 | 6 | ||||
| 2 | Wojciech Fibak | 4 | 3 | 0 | ||||
| First Round | Quarterfinals | Semifinals | ||||||||||||||||||
| 1 | Guillermo Vilas | 6 | 6 | |||||||||||||||||
| Roberto Gratz | 1 | 3 | ||||||||||||||||||
| 1 | Guillermo Vilas | 6 | 6 | |||||||||||||||||
| Fernando Dalla Fontana | 2 | 4 | ||||||||||||||||||
| Fernando Dalla Fontana | 6 | 6 | ||||||||||||||||||
| Julián Ganzábal | 0 | 0 | ||||||||||||||||||
| 1 | Guillermo Vilas | 6 | 6 | |||||||||||||||||
 Paolo Bertolucci | 3 | 2 | ||||||||||||||||||
| Paolo Bertolucci | 6 | 7 | ||||||||||||||||||
 Jose Santiago | 4 | 5 | ||||||||||||||||||
| Paolo Bertolucci | 6 | 9 | ||||||||||||||||||
 Ion Țiriac | 3 | 7 | ||||||||||||||||||
| Ion Țiriac | 6 | 6 | ||||||||||||||||||
| Lorenzo Soriano | 3 | 2 | ||||||||||||||||||
| First Round | Quarterfinals | Semifinals | ||||||||||||||||||
| Ricardo Cano | 3 | 6 | 6 | |||||||||||||||||
| Lito Álvarez | 6 | 2 | 2 | |||||||||||||||||
| Ricardo Cano | 6 | 6 | ||||||||||||||||||
 Balázs Taróczy | 3 | 3 | ||||||||||||||||||
| Balázs Taróczy | 6 | 6 | ||||||||||||||||||
| Roberto Aubone | 4 | 2 | ||||||||||||||||||
| Ricardo Cano | 3 | 7 | ||||||||||||||||||
| 2 | Wojciech Fibak | 6 | 9 | |||||||||||||||||
 Cliff Richey | 6 | 6 | ||||||||||||||||||
| Carlos Landó | 1 | 2 | ||||||||||||||||||
| Cliff Richey | 7 | 3 | ||||||||||||||||||
| 2 | Wojciech Fibak | 9 | 6 | |||||||||||||||||
 Hector Romani | 3 | 3 | ||||||||||||||||||
| Wojciech Fibak | 6 | 6 | ||||||||||||||||||
Guillermo Vilas is an Argentine former professional tennis player. Vilas was the No. 1 of the Grand Prix seasons in 1974, 1975 and 1977, and won four Grand Slam tournaments, one year-end Masters, and a total of 62 ATP titles. 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 ATP computer rankings, he peaked at No. 2 in April 1975, a position he held for a total of 83 weeks. He was inducted into the International Tennis Hall of Fame in 1991, two years after his first retirement.
Björn Borg defeated the defending champion Guillermo Vilas in the final, 6–1, 6–1, 6–3 to win the men's singles tennis title at the 1978 French Open. Borg did not lose a set during the tournament, and dropped only 32 games in total, which remains a French Open record.
Guillermo Vilas defeated Brian Gottfried in the final, 6–0, 6–3, 6–0 to win the men's singles tennis title at the 1977 French Open.
Defending champion Björn Borg successfully defended his title, defeating Jimmy Connors in the final, 3–6, 6–2, 6–1, 5–7, 6–4 to win the gentlemen's singles tennis title at the 1977 Wimbledon Championships.
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.
Guillermo Vilas defeated John Marks in the final, 6–4, 6–4, 3–6, 6–3 to win the men's singles tennis title at the 1978 Australian Open.
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 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 1976 South American Championships was a men's tennis tournament played on outdoor clay courts in Buenos Aires, Argentina that was part of the 1976 Commercial Union Assurance Grand Prix and held from 22 November through 28 November 1976. First-seeded Guillermo Vilas won the singles title.
The first 1977 ATP Buenos Aires official name 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 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.
Guillermo Vilas defeated Björn Borg 3–6, 6–7, 6–4, 6–6 after Borg retired to win the 1973 ATP Buenos Aires singles competition. Karl Meiler was the champion but did not defend his title.
Guillermo Vilas defeated Adriano Panatta 6–1, 6–4, 6–4 to win the 1975 ATP Buenos Aires singles competition. Vilas was the defending champion.
Guillermo Vilas defeated Jaime Fillol Sr. 6–2, 7–5, 3–6, 6–3 to win the November 1977 ATP Buenos Aires singles competition. Vilas was the defending champion.
Guillermo Vilas defeated José Luis Clerc 6–1, 6–2, 6–1 to win the 1979 ATP Buenos Aires singles competition. José Luis Clerc was the defending champion.
Guillermo Vilas defeated Alejandro Ganzábal 6–2, 6–4 to win the 1982 Buenos Aires Grand Prix tennis singles competition. Ivan Lendl was the champion but did not defend his title.
Top-seed Jimmy Connors claimed the title and first prize money of $25,000 by defeating third-seeded Guillermo Vilas in the final.
Manuel Orantes was the defending champion but lost in the quarterfinals. Jimmy Connors won the title for the second time and $25,000 prize money by defeating Wojciech Fibak in the final.
Juan Gisbert and Manuel Orantes were the defending champions, but they fell in the first round. Brian Gottfried and Raúl Ramírez claimed the title and $7,000 first-prize money following victory over Fred McNair and Sherwood Stewart in the final.