ATP 250 · 1991-04-01 · draw of 32
Estoril 1991
ClayFinal
| 🇪🇸 Sergi Bruguera | d. | 🇨🇿 Karel Novacek | 7-6(7) 6-1 | H2H |
Semifinals
| 🇪🇸 Sergi Bruguera | d. | 🇷🇺 Andrei Chesnokov | 6-4 2-6 6-3 | H2H |
| 🇨🇿 Karel Novacek | d. | 🇸🇰 Marian Vajda | 7-5 6-2 | H2H |
Quarterfinals
| 🇪🇸 Sergi Bruguera | d. | 🇮🇹 Renzo Furlan | 6-1 6-3 | H2H |
| 🇷🇺 Andrei Chesnokov | d. | 🇦🇹 Horst Skoff | 6-3 6-1 | H2H |
| 🇸🇰 Marian Vajda | d. | 🇪🇸 Francisco Clavet | 6-2 0-6 6-3 | H2H |
| 🇨🇿 Karel Novacek | d. | 🇪🇸 Javier Sanchez | 7-5 6-3 | H2H |
Round of 16
| 🇮🇹 Renzo Furlan | d. | 🇳🇱 Paul Haarhuis | 7-5 6-3 | H2H |
| 🇪🇸 Sergi Bruguera | d. | 🇦🇷 Eduardo Bengoechea | 6-3 6-7(8) 6-3 | H2H |
| 🇷🇺 Andrei Chesnokov | d. | 🇨🇭 Claudio Mezzadri | 5-7 7-5 6-1 | H2H |
| 🇦🇹 Horst Skoff | d. | 🇦🇺 Richard Fromberg | 6-4 6-2 | H2H |
| 🇸🇰 Marian Vajda | d. | 🇵🇹 Nuno Marques | 4-6 7-5 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇪🇸 Tomas Carbonell | 6-2 7-6(5) | H2H |
| 🇨🇿 Karel Novacek | d. | 🇭🇷 Goran Prpic | 6-2 7-5 | H2H |
| 🇪🇸 Javier Sanchez | d. | Ronald Agenor | 5-2 RET | H2H |
Round of 32
| 🇳🇱 Paul Haarhuis | d. | 🇪🇸 Emilio Sanchez | 6-0 6-2 | H2H |
| 🇮🇹 Renzo Furlan | d. | 🇫🇷 Thierry Champion | 2-6 7-6(2) 6-1 | H2H |
| 🇦🇷 Eduardo Bengoechea | d. | 🇫🇮 Veli Paloheimo | 7-5 4-6 6-2 | H2H |
| 🇪🇸 Sergi Bruguera | d. | 🇳🇱 Mark Koevermans | 6-3 6-3 | H2H |
| 🇷🇺 Andrei Chesnokov | d. | 🇦🇷 Horacio de la Pena | 6-4 6-2 | H2H |
| 🇨🇭 Claudio Mezzadri | d. | 🇪🇸 Jordi Arrese | 6-3 6-4 | H2H |
| 🇦🇺 Richard Fromberg | d. | 🇵🇹 Joao Cunha-Silva | 6-4 4-6 2-1 RET | H2H |
| 🇦🇹 Horst Skoff | d. | 🇨🇭 Marc Rosset | 6-1 1-6 6-3 | H2H |
| 🇸🇰 Marian Vajda | d. | 🇪🇸 Juan Aguilera | 7-5 3-6 6-2 | H2H |
| 🇵🇹 Nuno Marques | d. | 🇵🇹 Emanuel Couto | 6-2 3-6 6-1 | H2H |
| 🇪🇸 Tomas Carbonell | d. | 🇧🇷 Cassio Motta | 7-5 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇷🇺 Andrei Cherkasov | 6-2 4-6 7-5 | H2H |
| 🇨🇿 Karel Novacek | d. | 🇮🇹 Omar Camporese | 6-1 6-3 | H2H |
| 🇭🇷 Goran Prpic | d. | 🇫🇮 Aki Rahunen | 6-1 6-3 | H2H |
| 🇪🇸 Javier Sanchez | d. | 🇸🇪 Christer Allgardh | 4-6 7-5 6-2 | H2H |
| Ronald Agenor | d. | 🇪🇨 Andres Gomez | 6-4 6-3 | H2H |