 Austria: Kitzbuhel - Doubles - Main |
|---|
| Quarter-finals | Stankovic B./Vogel R. | Cihak J./Suk C. | 2:1 (6:3, 4:6, 7:6) | details | 02.08.1990 |
| 1/8-finals | Riglewski U./Saceanu C. | Cihak J./Suk C. | 0:0 RET. (0:5) | details | 31.07.1990 |
 Germany: Stuttgart - Doubles - Main |
|---|
| 1/8-finals | Cihak J./Suk C. | Korda P./Smid T. | 1:2 (7:6, 2:6, 6:7) | details | 18.07.1990 |
| 1/16-finals | Cihak J./Suk C. | Odizor N./Wekesa P. | 2:1 (6:2, 3:6, 6:1) | details | 16.07.1990 |
 Switzerland: Gstaad - Doubles - Main |
|---|
| 1/8-finals | Cihak J./Suk C. | De La Pena H./Mattar L. | 0:2 (3:6, 6:7) | details | 09.07.1990 |
 United Kingdom: Wimbledon - Doubles - Main |
|---|
| 1/32-finals | Courier J./Davis M. | Cihak J./Suk C. | 3:2 (4:6, 6:7, 7:6, 6:3, 6:3) | details | 30.06.1990 |
 France: French Open - Doubles - Main |
|---|
| 1/16-finals | Casal S./Sanchez E. | Cihak J./Suk C. | 2:1 (4:6, 6:3, 6:2) | details | 31.05.1990 |
| 1/32-finals | Cihak J./Suk C. | Pearce B./Reneberg R. | 2:1 (6:4, 6:77, 6:3) | details | 28.05.1990 |
 Italy: Rome - Doubles - Main |
|---|
| Quarter-finals | Cihak J./Suk C. | Courier J./Davis M. | 0:2 (2:6, 6:7) | details | 18.05.1990 |
| 1/8-finals | Novacek K./Srejber M. | Cihak J./Suk C. | 0:2 (1:6, 5:7) | details | 16.05.1990 |
| 1/16-finals | Cihak J./Suk C. | Beckman C./Jensen L. | 2:1 (3:6, 6:4, 6:3) | details | 14.05.1990 |
| Germany: Hamburg - Doubles - Main |
|---|
| Semi-finals | Riglewski U./Stich M. | Cihak J./Suk C. | 2:0 (7:6, 6:2) | details | 12.05.1990 |
| Quarter-finals | Beckman C./Jensen L. | Cihak J./Suk C. | 0:2 (2:6, 5:7) | details | 11.05.1990 |
| 1/8-finals | Cihak J./Suk C. | Gomez A./Sanchez J. | 2:1 (3:6, 6:3, 6:2) | details | 09.05.1990 |
| 1/16-finals | Bergh R./Gustafsson M. | Cihak J./Suk C. | 0:2 (4:6, 4:6) | details | 07.05.1990 |
| Germany: Munich - Doubles - Main |
|---|
| 1/8-finals | Cihak J./Suk C. | Bahrami M./Perez-Roldan G. | 1:2 (6:4, 6:7, 4:6) | details | 30.04.1990 |
 Monaco: Monte Carlo - Doubles - Main |
|---|
| 1/8-finals | Motta C./Nargiso D. | Cihak J./Suk C. | 2:1 (5:7, 6:4, 7:6) | details | 25.04.1990 |
| 1/16-finals | Cihak J./Suk C. | Lundgren P./Taroczy B. | 2:0 (6:3, 6:3) | details | 23.04.1990 |
 Morocco: Casablanca - Doubles - Main |
|---|
| Quarter-finals | Woodbridge T./Youl S. | Cihak J./Suk C. | 2:0 (6:1, 6:4) | details | 07.03.1990 |
| 1/8-finals | De Minicis A./Miniussi C. | Cihak J./Suk C. | 0:2 (6:7, 2:6) | details | 05.03.1990 |
| Italy: Milan - Doubles - Main |
|---|
| Quarter-finals | Camporese O./Nargiso D. | Cihak J./Suk C. | 2:0 (6:4, 6:4) | details | 08.02.1990 |
| 1/8-finals | Lendl I./Novacek K. | Cihak J./Suk C. | 1:2 (4:6, 6:3, 6:7) | details | 05.02.1990 |
