USA: Sarasota - Doubles - Main |
| 1/8-finals | Alonso J./Armando H. | Siljestrom A./Cerretani J. | 0:2 (5:7, 3:6) | details | 16.04.2014 |
San Marino: San Marino - Doubles - Main |
| 1/8-finals | Gaudenzi A./Nargiso D. | Alonso J./Armando H. | 2:0 (6:4, 6:4) | details | 24.07.2000 |
Croatia: Umag - Doubles - Main |
| 1/8-finals | Koves G./Tarango J. | Alonso J./Canas G. | 2:0 (6:2, 7:5) | details | 17.07.2000 |
USA: Verizon Tennis Challenge - Doubles - Main |
| Quarter-finals | Alonso J./Armando H. | Gimelstob J./Knowles M. | 0:2 (4:6, 1:6) | details | 12.04.2000 |
| 1/8-finals | Goldstein P./Woodruff C. | Alonso J./Armando H. | 1:2 (6:0, 4:6, 3:6) | details | 10.04.2000 |
USA: Memphis - Doubles - Main |
| 1/8-finals | Alonso J./Balcells J. | Johnson D./Montana F. | 0:2 (4:6, 4:6) | details | 16.02.2000 |
| 1/16-finals | Alonso J./Balcells J. | Kilderry P./Silcock G. | 2:0 (7:5, 6:1) | details | 14.02.2000 |
Spain: Mallorca - Doubles - Main |
| Semi-finals | Berasategui A./Roig F. | Alonso J./Balcells J. | 2:1 (7:5, 68:7, 6:2) | details | 18.09.1999 |
| Quarter-finals | Nicolas E./Puentes-Alcaniz G. | Alonso J./Balcells J. | 0:2 (4:6, 4:6) | details | 15.09.1999 |
| 1/8-finals | Alonso J./Balcells J. | Knippschild J./Prinosil D. | 2:0 (7:5, 6:4) | details | 13.09.1999 |
San Marino: San Marino - Doubles - Main |
| 1/8-finals | Alami K./Alonso J. | Arnold-Ker L./Hood M. | 0:2 (3:6, 2:6) | details | 09.08.1999 |
Austria: Kitzbuhel - Doubles - Main |
| 1/16-finals | Alonso J./Hipfl M. | Goellner M./Montana F. | 0:2 (3:6, 2:6) | details | 26.07.1999 |
France: French Open - Doubles - Main |
| 1/32-finals | Lisnard J./Llodra M. | Alonso J./Lopez-Moron A. | 2:1 (4:6, 6:4, 7:5) | details | 25.05.1999 |
Austria: St. Poelten - Doubles - Main |
| Quarter-finals | Florent A./Olhovskiy A. | Alonso J./Hipfl M. | 2:0 (6:3, 7:6) | details | 18.05.1999 |
| 1/8-finals | Alonso J./Hipfl M. | Polessnig M./Pampoulov L. | 2:0 (6:1, 6:1) | details | 17.05.1999 |