Guaruja 1981 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Carlos Kirmayr | d. | Ricardo Cano | 6-4 6-2 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ricardo Cano | d. | Kjell Johansson | 6-4 6-4 |
| Carlos Kirmayr | d. | Ilie Nastase | 6-4 6-3 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ilie Nastase | d. | Angel Gimenez | 7-5 7-5 |
| Ricardo Cano | d. | Eric Deblicker | 4-6 6-2 6-4 |
| Kjell Johansson | d. | Bill Scanlon | 7-5 6-3 |
| Carlos Kirmayr | d. | Eddie Dibbs | 6-3 6-3 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Ilie Nastase | d. | Rick Fagel | 6-1 3-6 6-1 |
| Kjell Johansson | d. | Paul Kronk | 6-4 7-6 |
| Angel Gimenez | d. | David Carter | 7-6 6-0 |
| Ricardo Cano | d. | Stefan Simonsson | 6-3 6-4 |
| Carlos Kirmayr | d. | Harald Theissen | 6-2 6-1 |
| Eric Deblicker | d. | Victor Pecci | 7-6 6-3 |
| Bill Scanlon | d. | Hank Pfister | 6-2 0-1 RET |
| Eddie Dibbs | d. | Guillermo Aubone | 6-3 6-4 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Harald Theissen | d. | Jairo Velasco | 6-4 2-6 6-4 |
| Stefan Simonsson | d. | Diego Perez | 6-1 1-0 RET |
| Hank Pfister | d. | Jose Lopez Maeso | 6-3 3-6 6-0 |
| Ilie Nastase | d. | Ney Keller | 7-5 6-2 |
| Paul Kronk | d. | Gabriel Urpi | 6-0 6-2 |
| Angel Gimenez | d. | Howard Schoenfield | 6-0 6-0 |
| Eric Deblicker | d. | Pablo Arraya | 7-5 6-4 |
| Guillermo Aubone | d. | Roger Guedes | 6-3 7-6 |
| Carlos Kirmayr | d. | Christophe Freyss | 6-2 6-2 |
| Ricardo Cano | d. | Thomaz Koch | 6-4 6-3 |
| David Carter | d. | Marcos Hocevar | 6-2 4-6 6-1 |
| Kjell Johansson | d. | Mario Martinez | 6-2 6-1 |
| Victor Pecci | d. | Steve Meister | 6-3 1-6 6-4 |
| Rick Fagel | d. | Jose Higueras | 6-4 6-4 |
| Bill Scanlon | d. | Joao Soares | 6-2 6-0 |
| Eddie Dibbs | d. | Fernando Maynetto | 7-5 6-3 |