Buenos Aires 1971 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Zeljko Franulovic | d. | Ilie Nastase | 6-3 7-6 6-1 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ilie Nastase | d. | Jan Leschly | 6-1 7-5 6-3 |
| Zeljko Franulovic | d. | Stan Smith | 2-6 7-6 6-1 6-3 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Stan Smith | d. | Roberto Aubone | 6-2 6-4 6-4 |
| Ilie Nastase | d. | Istvan Gulyas | 6-3 6-3 6-4 |
| Jan Leschly | d. | Cliff Richey | 6-1 4-6 6-3 6-2 |
| Zeljko Franulovic | d. | Frank Froehling | 6-7 7-6 7-6 6-4 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Stan Smith | d. | Joaquin Loyo Mayo | 6-1 6-2 2-6 6-3 |
| Cliff Richey | d. | Guillermo Vilas | 3-6 6-4 4-6 7-6 6-2 |
| Ilie Nastase | d. | Milan Holecek | 3-6 7-6 6-3 6-0 |
| Jan Leschly | d. | Clark Graebner | 6-1 6-3 1-6 6-1 |
| Istvan Gulyas | d. | Tom Gorman | 2-6 6-2 6-0 6-2 |
| Frank Froehling | d. | Jaime Pinto Bravo | 7-6 7-5 7-5 |
| Zeljko Franulovic | d. | Julian Ganzabal | 6-2 6-4 6-1 |
| Roberto Aubone | d. | Tomas Lynch | 4-6 0-6 7-5 6-3 7-5 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Guillermo Vilas | d. | U Unknown | UNK |
| Stan Smith | d. | Ricardo Aubone | 6-2 6-0 6-1 |
| Cliff Richey | d. | Ricardo Cano | 6-0 6-2 6-4 |
| Jaime Pinto Bravo | d. | Thomaz Koch | 6-1 6-4 6-3 |
| Ilie Nastase | d. | Oscar Escribano | 6-2 6-4 6-4 |
| Tomas Lynch | d. | U Unknown | UNK |
| Joaquin Loyo Mayo | d. | Patricio Rodriguez Chi | 7-5 6-2 6-3 |
| Jan Leschly | d. | Tito Vazquez | 2-6 6-4 4-6 6-3 6-1 |
| Milan Holecek | d. | Patricio Cornejo | 6-3 7-5 6-3 |
| Istvan Gulyas | d. | Eduardo Zuleta | 6-1 6-0 6-3 |
| Clark Graebner | d. | Norberto Herrero | 6-2 6-1 6-3 |
| Tom Gorman | d. | Roberto Graetz | 6-3 6-3 6-1 |
| Julian Ganzabal | d. | Lorenzo Soriano | 6-4 6-2 6-2 |
| Frank Froehling | d. | Lito Alvarez | 7-6 6-4 6-2 |
| Zeljko Franulovic | d. | Hector Romani | 6-7 6-3 6-2 6-4 |
| Roberto Aubone | d. | Jaime Fillol | 6-2 7-6 6-4 |