USA: Miami - Doubles - Main
1/32-finals Groen S./Prinosil D. Haggard C./Rosner P. 0:0 RET. (1:4) dettagli 16.03.1998
France: Toulouse - Doubles - Main
1/8-finals Groen S./Prinosil D. Clement A./Grosjean S. 0:2 (3:6, 2:6) dettagli 22.09.1997
USA: US Open - Doubles - Main
1/32-finals Lobo L./Sanchez J. Groen S./Prinosil D. 2:1 (4:7, 7:6, 7:6) dettagli 27.08.1997
Denmark: Copenhagen - Doubles - Main
Quarter-finals Groen S./Prinosil D. Carlsen K./Fetterlein F. 1:2 (4:6, 6:4, 3:6) dettagli 12.03.1997
1/8-finals Groen S./Prinosil D. Andersen T./Langvardt P. 2:0 (6:3, 6:0) dettagli 10.03.1997
Qatar: Doha - Doubles - Main
Quarter-finals Groen S./Prinosil D. Cannon S./Talbot B. 1:2 (6:4, 6:7, 2:6) dettagli 05.01.1994
1/8-finals Muller G./Melville S. Groen S./Prinosil D. 0:2 (4:6, 2:6) dettagli 03.01.1994
Russia: Moscow - Doubles - Main
Quarter-finals Eltingh J./Haarhuis P. Groen S./Prinosil D. 2:0 (6:3, 6:4) dettagli 10.11.1993
1/8-finals Damm M./Vacek D. Groen S./Prinosil D. 0:2 (4:6, 4:6) dettagli 08.11.1993
Indonesia: Jakarta - Doubles - Main
Quarter-finals Pearce B./Talbot B. Groen S./Prinosil D. 2:0 (6:2, 6:3) dettagli 13.01.1993
1/8-finals Pozzi G./Rahnasto O. Groen S./Prinosil D. 1:2 (4:6, 6:3, 3:6) dettagli 11.01.1993
Malaysia: Kuala Lumpur - Doubles - Main
1/8-finals Groen S./Prinosil D. Benson R./Malik A. 1:2 (6:7, 6:1, 4:6) dettagli 04.01.1993
United Kingdom: Wimbledon - Doubles - Qualification
Semi-finals Groen S./Prinosil D. Borwick N./Kratzmann A. 1:2 (4:6, 6:3, 13:15) dettagli 26.06.1991
Quarter-finals Kroon N./Kulti N. Groen S./Prinosil D. 1:2 (6:2, 4:6, 4:6) dettagli 24.06.1991