 Germany: Hamburg - Doubles - Main |
|---|
| 1/16-finals | Bakkum C./Krijger-Jagerman N. | Cohen C./Wittke M. | 2:0 (6:2, 6:2) | details | 29.04.1991 |
 Spain: Barcelona 2 - Doubles - Main |
|---|
| 1/8-finals | Navratilova M./Sanchez-Vicario A. | Cohen C./Frankl S. | 2:0 (6:1, 6:1) | details | 24.04.1991 |
| 1/16-finals | Cohen C./Frankl S. | Kidowaki M./Van Lottum N. | 2:1 (6:3, 4:6, 6:1) | details | 22.04.1991 |
 Austria: Linz - Doubles - Main |
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| 1/8-finals | Cohen C./Reichel S. | Aallonen A./Schilder S. | 0:2 (3:6, 5:7) | details | 11.02.1991 |
 Norway: Oslo - Doubles - Main |
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| 1/8-finals | Herreman N./Scheuer-Larsen T. | Cohen C./Reinstadler B. | 2:0 (7:5, 6:2) | details | 05.02.1991 |
 United Kingdom: Brighton - Doubles - Main |
|---|
| 1/8-finals | Belinsky V./Sprung H. | Cohen C./Krajcovicova D. | 2:1 (3:6, 7:5, 6:3) | details | 22.10.1990 |
 Italy: Palermo - Doubles - Main |
|---|
| 1/8-finals | Cohen C./Kanellopoulou A. | Labat F./Romano B. | 0:2 (2:6, 2:6) | details | 09.07.1990 |
 New Zealand: Auckland - Doubles - Main |
|---|
| Quarter-finals | Cordwell B./Pfaff E. | Cohen C./Krapl E. | 2:0 (6:1, 6:3) | details | 31.01.1990 |
| 1/8-finals | Seeman R./Toleafoa C. | Cohen C./Krapl E. | 0:2 (5:7, 4:6) | details | 29.01.1990 |
 Australia: Australian Open - Doubles - Main |
|---|
| 1/32-finals | Cohen C./O'Neill L. | Thompson J./Turnbull W. | 0:2 (0:6, 2:6) | details | 15.01.1990 |
| Australia: Brisbane 2 - Doubles - Main |
|---|
| 1/16-finals | Cohen C./O'Neill L. | Lindstrom M./Ludloff H. | 1:2 (6:4, 5:7, 4:6) | details | 01.01.1990 |
Brazil: Sao Paulo - Singles - Main
France: French Open - Singles - Main
Switzerland: Geneva - Singles - Main