France: French Open - Singles - Qualification |
| Final | Balcells J. | Van Herck J. | 2:1 (6:4, 66:7, 6:2) | details | 26.05.2000 |
| Semi-finals | Caratti C. | Van Herck J. | 0:2 (1:6, 63:7) | details | 24.05.2000 |
| Quarter-finals | Van Herck J. | Benfele-Alvarez E. | 2:1 (7:5, 63:7, 10:8) | details | 22.05.2000 |
France: French Open - Singles - Qualification |
| Semi-finals | Voltchkov V. | Van Herck J. | 2:1 (7:5, 3:6, 6:2) | details | 19.05.1999 |
| Quarter-finals | Ferreira A. | Van Herck J. | 0:2 (65:7, 3:6) | details | 17.05.1999 |
USA: Verizon Tennis Challenge - Singles - Main |
| 1/16-finals | Larsson M. | Van Herck J. | 2:0 (6:3, 6:2) | details | 26.04.1999 |
USA: Orlando - Singles - Main |
| 1/16-finals | Martin A. | Van Herck J. | 2:1 (6:3, 3:6, 7:5) | details | 19.04.1999 |
Morocco: Casablanca - Singles - Main |
| Quarter-finals | Van Herck J. | Hipfl M. | 1:2 (3:6, 6:1, 3:6) | details | 26.03.1999 |
| 1/8-finals | Van Herck J. | Canas G. | 2:1 (6:4, 4:6, 6:4) | details | 24.03.1999 |
| 1/16-finals | Muster T. | Van Herck J. | 1:2 (4:6, 6:4, 4:6) | details | 22.03.1999 |
United Arab Emirates: Dubai - Singles - Main |
| 1/8-finals | Van Herck J. | Kuerten G. | 0:2 (3:6, 2:6) | details | 10.02.1999 |
| 1/16-finals | Van Herck J. | Paes L. | 2:0 (6:4, 6:3) | details | 08.02.1999 |
Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Van Herck J. | Balcells J. | 1:2 (7:65, 3:6, 3:6) | details | 13.01.1999 |
Sweden: Stockholm - Singles - Main |
| 1/16-finals | Nestor D. | Van Herck J. | 2:0 (6:3, 7:62) | details | 09.11.1998 |
France: Lyon 2 - Singles - Main |
| 1/16-finals | Woodbridge T. | Van Herck J. | 2:1 (6:4, 64:7, 7:6) | details | 19.10.1998 |
Spain: Mallorca - Main |
| 1/16-finals | Kuerten G. | Van Herck J. | 1:0 RET. (7:64, 1:0) | details | 28.09.1998 |
Netherlands: Amsterdam - Singles - Main |
| 1/16-finals | Marin J. | Van Herck J. | 2:1 (6:2, 4:6, 6:3) | details | 03.08.1998 |
USA: Washington - Singles - Main |
| 1/32-finals | Van Herck J. | Tarango J. | 0:2 (1:6, 2:6) | details | 20.07.1998 |
United Kingdom: Wimbledon - Singles - Main |
| 1/64-finals | Sanguinetti D. | Van Herck J. | 2:1 RET. (60:7, 6:1, 6:1, 2:0) | details | 30.06.1998 |
Netherlands: Hertogenbosch - Singles - Main |
| 1/16-finals | Van Herck J. | Dewulf F. | 0:2 (62:7, 3:6) | details | 15.06.1998 |
Italy: Bologna - Singles - Main |
| 1/16-finals | Van Herck J. | Puerta M. | 0:2 (3:6, 2:6) | details | 08.06.1998 |
France: French Open - Singles - Main |
| 1/16-finals | Knippschild J. | Van Herck J. | 3:2 (2:6, 0:6, 7:66, 6:4, 6:2) | details | 30.05.1998 |
| 1/32-finals | Mas J. | Van Herck J. | 0:3 (3:6, 64:7, 5:7) | details | 28.05.1998 |
| 1/64-finals | Van Herck J. | Rusedski G. | 3:0 (6:4, 6:4, 6:4) | details | 25.05.1998 |
USA: Coral Springs - Singles - Main |
| Semi-finals | Van Herck J. | Sanguinetti D. | 0:2 (3:6, 4:6) | details | 08.05.1998 |
| Quarter-finals | Van Herck J. | Tebbutt M. | 2:0 (6:1, 6:4) | details | 06.05.1998 |
| 1/8-finals | Campbell S. | Van Herck J. | 0:2 (5:7, 0:6) | details | 05.05.1998 |
| 1/16-finals | Marin J. | Van Herck J. | 1:2 (63:7, 6:3, 2:6) | details | 04.05.1998 |
USA: Verizon Tennis Challenge - Singles - Main |
| 1/8-finals | Delgado R. | Van Herck J. | 2:0 (6:3, 6:1) | details | 29.04.1998 |
| 1/16-finals | Van Herck J. | Pozzi G. | 2:0 (6:2, 6:4) | details | 27.04.1998 |
USA: Orlando - Singles - Main |
| 1/16-finals | Van Herck J. | Stafford G. | 0:2 (3:6, 1:6) | details | 20.04.1998 |
USA: Miami - Singles - Main |
| 1/64-finals | Arnold-Ker L. | Van Herck J. | 2:1 (6:1, 3:6, 6:1) | details | 16.03.1998 |
Denmark: Copenhagen - Singles - Main |
| 1/16-finals | Van Herck J. | Sanguinetti D. | 0:2 (64:7, 5:7) | details | 09.03.1998 |
Netherlands: Rotterdam - Singles - Main |
| Quarter-finals | Van Herck J. | Johansson T. | 0:2 (68:7, 2:6) | details | 06.03.1998 |
| 1/8-finals | Bruguera S. | Van Herck J. | 0:2 (66:7, 3:6) | details | 04.03.1998 |
| 1/16-finals | Novak J. | Van Herck J. | 1:2 (7:64, 3:6, 67:7) | details | 02.03.1998 |
Belgium: Antwerp 2 - Singles - Main |
| 1/16-finals | Van Herck J. | Kucera K. | 1:2 (7:63, 4:6, 2:6) | details | 16.02.1998 |
Russia: St. Petersburg - Singles - Main |
| 1/8-finals | Van Herck J. | Pioline C. | 0:2 (3:6, 4:6) | details | 11.02.1998 |
| 1/16-finals | Tillstrom M. | Van Herck J. | 1:2 (6:3, 3:6, 4:6) | details | 09.02.1998 |
France: Marseille - Singles - Main |
| 1/16-finals | Gustafsson M. | Van Herck J. | 2:1 (61:7, 6:4, 6:2) | details | 02.02.1998 |
Australia: Australian Open - Singles - Main |
| 1/64-finals | Prinosil D. | Van Herck J. | 3:2 (3:6, 62:7, 6:1, 6:4, 6:1) | details | 23.01.1998 |
New Zealand: Auckland - Singles - Main |
| 1/16-finals | Van Herck J. | Mantilla F. | 0:2 (63:7, 3:6) | details | 12.01.1998 |
Sweden: Stockholm - Singles - Main |
| 1/8-finals | Rafter P. | Van Herck J. | 2:0 (6:3, 6:4) | details | 05.11.1997 |
| 1/16-finals | Holm H. | Van Herck J. | 1:2 (3:6, 7:67, 3:6) | details | 03.11.1997 |
United Kingdom: Bournemouth - Singles - Main |
| 1/8-finals | Van Herck J. | Arnold-Ker L. | 0:2 (1:6, 5:7) | details | 10.09.1997 |
| 1/16-finals | Steven B. | Van Herck J. | 0:2 (3:6, 2:6) | details | 08.09.1997 |
USA: US Open - Singles - Main |
| 1/32-finals | Van Lottum J. | Van Herck J. | 3:0 (6:3, 6:4, 6:4) | details | 28.08.1997 |
| 1/64-finals | Van Herck J. | Dewulf F. | 3:1 (6:4, 4:6, 7:63, 7:65) | details | 25.08.1997 |