Medellin CH 1983 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Michiel Schapers | d. | John Austin | 6-3 6-4 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Michiel Schapers | d. | Hans Peter Kandler | 6-2 2-6 6-3 |
| John Austin | d. | Gerald Mild | 6-4 6-4 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Michiel Schapers | d. | Juan Hernandez | 7-6 1-6 7-6 |
| Hans Peter Kandler | d. | Phil Lehnhoff | 6-2 6-4 |
| John Austin | d. | Fernando Maynetto | 6-2 6-4 |
| Gerald Mild | d. | Bernhard Pils | 7-6 6-2 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Michiel Schapers | d. | Morten Ronneberg | W/O |
| Gerald Mild | d. | John Picken | 7-6 6-4 |
| Fernando Maynetto | d. | Tarik Benhabiles | 7-6 6-4 |
| Phil Lehnhoff | d. | Francesco Cancellotti | 6-2 6-2 |
| Hans Peter Kandler | d. | Randy Druz | 6-4 6-4 |
| Juan Hernandez | d. | Jacques Grandjean | 6-1 3-6 6-4 |
| John Austin | d. | Larry Stefanki | 7-6 4-6 6-4 |
| Bernhard Pils | d. | Patrice Kuchna | 4-6 6-3 6-4 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Larry Stefanki | d. | Phillip Ilako | 6-2 6-1 |
| Michiel Schapers | d. | Syd Ball | 6-3 6-1 |
| John Picken | d. | Huub Van Boeckel | 6-4 6-0 |
| Gerald Mild | d. | Thomas Stalhandske | 6-1 6-3 |
| Fernando Maynetto | d. | Maurice Hunter | 4-6 7-6 7-6 |
| Phil Lehnhoff | d. | Jonathan Canter | 6-7 7-6 6-1 |
| Patrice Kuchna | d. | Helmar Stiegler | 6-1 3-6 6-4 |
| Juan Hernandez | d. | James Ilako | 7-5 6-1 |
| Jacques Grandjean | d. | Kevin Manning | 6-0 6-3 |
| Randy Druz | d. | Frank Hamonet | 2-6 7-6 7-6 |
| Tarik Benhabiles | d. | Rick Fagel | 5-7 6-4 6-1 |
| Hans Peter Kandler | d. | Harald Theissen | 6-7 6-2 6-2 |
| Bernhard Pils | d. | Eric Wilborts | 1-6 6-2 7-6 |
| Morten Ronneberg | d. | Haroon Ismail | 6-3 6-4 |
| John Austin | d. | Peter Feigl | 6-2 3-0 RET |
| Francesco Cancellotti | d. | Sashi Menon | 6-3 6-4 |