United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Marques N./VanHoudt T. | Koenig R./Olhovskiy A. | 1:3 (7:62, 67:7, 3:6, 64:7) | details | 27.06.2000 |
Netherlands: Hertogenbosch - Doubles - Main |
| Quarter-finals | Marques N./VanHoudt T. | Damm M./Suk C. | 0:2 (4:6, 4:6) | details | 22.06.2000 |
| 1/8-finals | Bergh F./Nyborg P. | Marques N./VanHoudt T. | 0:2 (4:6, 3:6) | details | 20.06.2000 |
France: French Open - Doubles - Main |
| 1/32-finals | Albano P./Haggard C. | Marques N./VanHoudt T. | 2:1 (6:4, 5:7, 6:2) | details | 30.05.2000 |
Spain: Mallorca - Main |
| Semi-finals | Marques N./VanHoudt T. | Martin A./Vicente F. | 0:2 (5:7, 3:6) | details | 05.05.2000 |
| Quarter-finals | Marques N./VanHoudt T. | Pala P./Vizner P. | 2:1 (6:4, 5:7, 6:3) | details | 03.05.2000 |
| 1/8-finals | Marques N./VanHoudt T. | Nicolas E./Puentes-Alcaniz G. | 2:0 (6:3, 6:1) | details | 01.05.2000 |
Portugal: Estoril - Doubles - Main |
| Quarter-finals | Cunha-Silva J./Mota B. | Marques N./VanHoudt T. | 2:0 (6:4, 7:63) | details | 12.04.2000 |
| 1/8-finals | Marques N./VanHoudt T. | Vacek D./Zimonjic N. | 2:0 (6:2, 6:3) | details | 10.04.2000 |
USA: Miami - Doubles - Main |
| 1/32-finals | Marques N./VanHoudt T. | Hood M./Prieto S. | 0:2 (64:7, 5:7) | details | 21.03.2000 |
Denmark: Copenhagen - Doubles - Main |
| Semi-finals | Marques N./VanHoudt T. | Damm M./Prinosil D. | 0:2 (2:6, 1:6) | details | 04.03.2000 |
| Quarter-finals | Pala P./Vizner P. | Marques N./VanHoudt T. | 1:2 (2:6, 6:4, 1:6) | details | 02.03.2000 |
| 1/8-finals | Broad N./Bowen D. | Marques N./VanHoudt T. | 1:2 (7:5, 62:7, 2:6) | details | 29.02.2000 |
Australia: Australian Open - Doubles - Main |
| Quarter-finals | Marques N./VanHoudt T. | Woodforde M./Woodbridge T. | 0:2 (3:6, 2:6) | details | 25.01.2000 |
| 1/8-finals | Marques N./VanHoudt T. | Ellwood B./Tebbutt M. | 2:1 (3:6, 6:3, 6:4) | details | 22.01.2000 |
| 1/16-finals | Olhovskiy A./Siemerink J. | Marques N./VanHoudt T. | 1:2 (68:7, 7:65, 1:6) | details | 20.01.2000 |
| 1/32-finals | Kitinov A./Manta L. | Marques N./VanHoudt T. | 1:2 (7:66, 3:6, 4:6) | details | 18.01.2000 |
France: Toulouse - Doubles - Main |
| 1/8-finals | Bastl G./Luxa P. | Marques N./VanHoudt T. | 2:0 (6:4, 6:4) | details | 27.09.1999 |
USA: US Open - Doubles - Main |
| 1/16-finals | Marques N./VanHoudt T. | Gimelstob J./Reneberg R. | 1:2 (2:6, 7:65, 65:7) | details | 03.09.1999 |
| 1/32-finals | Blake J./Blake T. | Marques N./VanHoudt T. | 0:2 (4:6, 4:6) | details | 01.09.1999 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Knowles M./Nestor D. | Marques N./VanHoudt T. | 3:0 (6:3, 7:5, 6:1) | details | 28.06.1999 |
Spain: Barcelona - Doubles - Main |
| Semi-finals | Marques N./VanHoudt T. | Haarhuis P./Kafelnikov Y. | 0:2 (2:6, 4:6) | details | 17.04.1999 |
| Quarter-finals | Marques N./VanHoudt T. | Berasategui A./Roig F. | 2:0 (7:6, 6:4) | details | 15.04.1999 |
| 1/8-finals | Kitinov A./Meligeni F. | Marques N./VanHoudt T. | 0:2 (4:6, 3:6) | details | 14.04.1999 |
| 1/16-finals | Marques N./VanHoudt T. | Koves G./Pimek L. | 2:1 (6:2, 1:6, 6:3) | details | 12.04.1999 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | Marques N./VanHoudt T. | Galbraith P./Steven B. | 0:2 (3:6, 5:7) | details | 26.06.1998 |
| 1/32-finals | Brandi C./Messori F. | Marques N./VanHoudt T. | 1:2 (6:4, 4:6, 4:6) | details | 24.06.1998 |
France: French Open - Doubles - Main |
| 1/32-finals | Marques N./VanHoudt T. | Kempers T./Oosting M. | 0:2 (4:6, 2:6) | details | 26.05.1997 |
Morocco: Casablanca - Doubles - Main |
| Quarter-finals | Marques N./VanHoudt T. | Davids H. J./Goellner M. | 0:2 (5:7, 1:6) | details | 28.03.1996 |
| 1/8-finals | Arrese J./Conde J. A. | Marques N./VanHoudt T. | 0:2 (4:6, 2:6) | details | 25.03.1996 |