Select tournament type
| 1/8-finals | Bengoechea E. | Witsken T. | 1:2 (4:6, 6:3, 4:6) | details | 01.05.1991 | ||
| 1/16-finals | Bengoechea E. | De La Pena H. | 2:1 (4:6, 7:5, 6:1) | details | 29.04.1991 | ||
| 1/8-finals | De La Pena H. | Bengoechea E. | 2:1 (6:4, 3:6, 6:0) | details | 17.04.1991 | ||
| 1/16-finals | Bengoechea E. | Cherkasov A. | 2:1 (6:4, 4:6, 6:4) | details | 15.04.1991 | ||
| 1/8-finals | Bruguera S. | Bengoechea E. | 2:1 (6:3, 68:7, 6:3) | details | 03.04.1991 | ||
| 1/16-finals | Bengoechea E. | Paloheimo V. | 2:1 (7:5, 4:6, 6:2) | details | 01.04.1991 | ||
| 1/8-finals | Bengoechea E. | Weiss R. | 0:2 (4:6, 4:6) | details | 24.10.1990 | ||
| 1/16-finals | Bengoechea E. | Wostenholme M. | 2:0 (6:0, 6:1) | details | 22.10.1990 | ||
| 1/16-finals | Bruguera S. | Bengoechea E. | 2:0 (6:1, 7:5) | details | 18.06.1990 | ||
| 1/8-finals | Luna F. | Bengoechea E. | 2:0 (6:1, 6:1) | details | 13.06.1990 | ||
| 1/16-finals | Benhabiles T. | Bengoechea E. | 0:2 (4:6, 3:6) | details | 11.06.1990 | ||
| 1/16-finals | Bengoechea E. | De La Pena H. | 1:2 (7:5, 2:6, 0:6) | details | 14.05.1990 | ||
| 1/16-finals | Bengoechea E. | Perez D. | 0:2 (3:6, 5:7) | details | 30.04.1990 | ||
| 1/32-finals | Davin F. | Bengoechea E. | 2:0 (6:1, 6:2) | details | 09.04.1990 | ||
| 1/16-finals | Garrow B. | Bengoechea E. | 2:1 (6:0, 4:6, 6:3) | details | 02.04.1990 | ||
| Semi-finals | Bengoechea E. | Mattar L. | 0:2 (4:6, 2:6) | details | 10.02.1990 | ||
| Quarter-finals | Berger J. | Bengoechea E. | 0:2 (5:7, 0:6) | details | 09.02.1990 | ||
| 1/8-finals | Ballauff P. | Bengoechea E. | 0:2 (4:6, 5:7) | details | 07.02.1990 | ||
| 1/16-finals | Oncins J. | Bengoechea E. | 0:2 (2:6, 4:6) | details | 05.02.1990 | ||
| 1/8-finals | Nijssen T./Suk C. | Bengoechea E./Clavet F. | 2:0 (6:2, 7:6) | details | 01.04.1991 | ||
| Quarter-finals | Cannon S./Mora A. | Bengoechea E./Guy S. | 2:1 (6:7, 6:4, 7:6) | details | 24.10.1990 | ||
| 1/8-finals | Bengoechea E./Guy S. | Frana J./Roese F. | 2:1 (5:7, 7:5, 6:3) | details | 22.10.1990 | ||
| Quarter-finals | Bathman R./Bergh R. | Bengoechea E./Masso E. | WO. | details | 13.09.1990 | ||
| 1/8-finals | Bengoechea E./Masso E. | Ivanisevic G./Taroczy B. | 2:0 (6:3, 7:5) | details | 10.09.1990 | ||
| 1/8-finals | Bengoechea E./Skoff H. | Koevermans M./Mattar L. | 0:2 (6:7, 4:6) | details | 18.06.1990 | ||
| 1/8-finals | Luza G./Riglewski U. | Bengoechea E./Segarceanu F. | 2:0 (6:3, 6:1) | details | 11.06.1990 | ||
| Quarter-finals | Pimek L./Roig F. | Bengoechea E./Ingaramo M. | 2:1 (4:6, 6:3, 6:3) | details | 17.05.1990 | ||
| 1/8-finals | Bengoechea E./Ingaramo M. | Mora A./Page B. | 2:1 (1:6, 6:0, 6:2) | details | 14.05.1990 | ||
| 1/8-finals | Bengoechea E./Rosset M. | Gomez A./Sanchez J. | 1:2 (7:5, 3:6, 3:6) | details | 11.04.1990 | ||
| 1/16-finals | Bengoechea E./Rosset M. | Anda T./Clavet J. M. | 2:0 (6:0, 6:1) | details | 09.04.1990 | ||
| 1/8-finals | Arguello R./Rivas G. | Bengoechea E./Sobel J. | 2:0 (6:2, 6:2) | details | 05.02.1990 | ||