ATP 250 · 1991-09-23 · draw of 32
Basel 1991
HardFinal
| 🇨🇭 Jakob Hlasek | d. | 🇺🇸 John McEnroe | 7-6(4) 6-0 6-3 | H2H |
Semifinals
| 🇨🇭 Jakob Hlasek | d. | 🇷🇺 Alexander Volkov | 7-6(3) 6-7(5) 7-6(5) | H2H |
| 🇺🇸 John McEnroe | d. | 🇺🇸 Jimmy Connors | 6-1 6-3 | H2H |
Quarterfinals
| 🇷🇺 Alexander Volkov | d. | 🇨🇿 Karel Novacek | 6-1 6-7(9) 6-3 | H2H |
| 🇨🇭 Jakob Hlasek | d. | 🇺🇸 Kevin Curren | 6-3 6-4 | H2H |
| 🇺🇸 Jimmy Connors | d. | 🇮🇱 Amos Mansdorf | 6-3 6-2 | H2H |
| 🇺🇸 John McEnroe | d. | 🇸🇪 Christian Bergstrom | 7-6(3) 6-4 | H2H |
Round of 16
| 🇨🇿 Karel Novacek | d. | 🇸🇪 Nicklas Kulti | 6-4 6-7(2) 7-6(2) | H2H |
| 🇷🇺 Alexander Volkov | d. | 🇪🇸 Tomas Carbonell | 6-3 6-4 | H2H |
| 🇺🇸 Kevin Curren | d. | 🇪🇸 Sergi Bruguera | 6-4 3-6 6-3 | H2H |
| 🇨🇭 Jakob Hlasek | d. | 🇩🇪 Carl-Uwe Steeb | 7-6(8) 6-3 | H2H |
| 🇮🇱 Amos Mansdorf | d. | 🇮🇹 Paolo Cane | 7-5 6-4 | H2H |
| 🇺🇸 Jimmy Connors | d. | 🇨🇿 Petr Korda | 6-3 6-4 | H2H |
| 🇺🇸 John McEnroe | d. | 🇺🇸 Patrick McEnroe | 6-2 6-4 | H2H |
| 🇸🇪 Christian Bergstrom | d. | 🇸🇪 Johan Carlsson | 6-3 6-2 | H2H |
Round of 32
| 🇨🇿 Karel Novacek | d. | 🇳🇱 Paul Haarhuis | 6-2 1-6 6-3 | H2H |
| 🇸🇪 Nicklas Kulti | d. | 🇮🇹 Cristiano Caratti | 6-1 6-4 | H2H |
| 🇪🇸 Tomas Carbonell | d. | 🇩🇪 Christian Saceanu | 7-5 6-3 | H2H |
| 🇷🇺 Alexander Volkov | d. | 🇫🇷 Guillaume Raoux | 6-3 6-4 | H2H |
| 🇪🇸 Sergi Bruguera | d. | 🇸🇪 David Engel | 2-6 7-5 7-6(2) | H2H |
| 🇺🇸 Kevin Curren | d. | 🇨🇭 Marc Rosset | 2-6 7-6(1) 6-1 | H2H |
| 🇩🇪 Carl-Uwe Steeb | d. | 🇫🇷 Jean-Philippe Fleurian | 6-0 7-6(3) | H2H |
| 🇨🇭 Jakob Hlasek | d. | 🇸🇪 Jan Gunnarsson | 6-3 6-2 | H2H |
| 🇮🇱 Amos Mansdorf | d. | 🇷🇺 Andrei Cherkasov | 1-6 6-3 6-3 | H2H |
| 🇮🇹 Paolo Cane | d. | 🇸🇪 Thomas Enqvist | 4-6 6-3 7-6(5) | H2H |
| 🇺🇸 Jimmy Connors | d. | 🇫🇷 Laurent Prades | 6-3 6-1 | H2H |
| 🇨🇿 Petr Korda | d. | 🇸🇪 Anders Jarryd | 3-6 6-4 6-3 | H2H |
| 🇺🇸 John McEnroe | d. | 🇫🇷 Thierry Guardiola | 6-2 6-4 | H2H |
| 🇺🇸 Patrick McEnroe | d. | 🇨🇭 Claudio Mezzadri | 6-7(3) 7-5 6-0 | H2H |
| 🇸🇪 Johan Carlsson | d. | 🇩🇪 Alexander Mronz | 7-5 5-7 6-3 | H2H |
| 🇸🇪 Christian Bergstrom | d. | 🇩🇪 Michael Stich | 6-3 6-3 | H2H |