 USA: Los Angeles - Doubles - Main |
|---|
| 1/8-finals | Burgin E./Fairbank-Nideffer R. | Demongeot I./Porwik C. | 2:0 (6:3, 6:3) | details | 15.08.1990 |
| 1/16-finals | Lindstrom M./Ludloff H. | Demongeot I./Porwik C. | 0:2 (6:7, 4:6) | details | 13.08.1990 |
| USA: San Diego - Doubles - Main |
|---|
| Quarter-finals | Demongeot I./Porwik C. | Gregory L./Rush G. | 0:2 (4:6, 6:7) | details | 08.08.1990 |
| 1/8-finals | Marcinkowska R./MacGregor C. | Demongeot I./Porwik C. | 0:2 (5:7, 0:6) | details | 06.08.1990 |
 Canada: Montreal - Doubles - Main |
|---|
| Quarter-finals | Demongeot I./Porwik C. | Jordan K./Smylie E. | 1:2 (2:6, 6:4, 5:7) | details | 03.08.1990 |
| 1/8-finals | Durie J./Richardson J. | Demongeot I./Porwik C. | 0:2 (3:6, 2:6) | details | 01.08.1990 |
| 1/16-finals | Demongeot I./Porwik C. | Helgeson N. G./Schefflin S. | 2:0 (6:3, 6:3) | details | 30.07.1990 |
