Graz CH 1991 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Thomas Buchmayer | d. | Thierry Guardiola | 6-3 6-2 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Thierry Guardiola | d. | Harald Mair | 6-3 3-6 6-1 |
| Thomas Buchmayer | d. | Francesco Michelotti | 6-3 7-6 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Harald Mair | d. | Nicklas Utgren | 6-3 0-6 7-6 |
| Thierry Guardiola | d. | Jan Apell | 7-5 6-4 |
| Thomas Buchmayer | d. | Xavier Daufresne | 4-0 RET |
| Francesco Michelotti | d. | Alejandro Aramburu | 6-1 6-3 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Nicklas Utgren | d. | Alex Antonitsch | 6-4 6-3 |
| Harald Mair | d. | Roberto Arguello | 6-4 3-6 6-4 |
| Thierry Guardiola | d. | Gilbert Schaller | 4-6 6-2 6-1 |
| Jan Apell | d. | Andrei Merinov | 6-4 4-6 6-0 |
| Xavier Daufresne | d. | Thomas Prerovsky | 6-4 6-4 |
| Thomas Buchmayer | d. | Tarik Benhabiles | 6-3 6-4 |
| Francesco Michelotti | d. | Marcelo Ingaramo | 6-3 1-6 6-3 |
| Alejandro Aramburu | d. | Tomas Weindorfer | 6-2 6-0 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Alex Antonitsch | d. | Martin Schaffl | 6-2 6-3 |
| Nicklas Utgren | d. | Gerald Mandl | 6-3 0-6 7-6 |
| Harald Mair | d. | Alexander Pfann | 7-5 6-2 |
| Roberto Arguello | d. | Joost Winnink | 6-1 6-0 |
| Thierry Guardiola | d. | Dinu Pescariu | 7-5 6-1 |
| Gilbert Schaller | d. | Greg Failla | 6-1 6-2 |
| Andrei Merinov | d. | Mansour Bahrami | 6-2 6-4 |
| Jan Apell | d. | Jose Luis Aparisi | 6-2 6-0 |
| Thomas Prerovsky | d. | Markus Naewie | 7-5 6-4 |
| Xavier Daufresne | d. | Alessandro Dalboni | 5-7 3-3 RET |
| Thomas Buchmayer | d. | Eric Winogradsky | 6-1 6-4 |
| Tarik Benhabiles | d. | Michael Tauson | 6-4 6-2 |
| Marcelo Ingaramo | d. | Dirk Dier | 7-6 6-4 |
| Francesco Michelotti | d. | Brian Joelson | 6-4 6-2 |
| Tomas Weindorfer | d. | Raviv Weidenfeld | 6-3 4-6 7-6 |
| Alejandro Aramburu | d. | Vaclav Roubicek | 6-1 6-1 |