 USA: US Open - Mixed Doubles - Main |
|---|
| 1/16-finals | Beckman C./Louie Harper P. | Seguso R./McNeil L. | 2:0 (6:4, 6:3) | details | 27.08.1990 |
 United Kingdom: Wimbledon - Mixed Doubles - Main |
|---|
| 1/8-finals | Pugh J./Novotna J. | Seguso R./McNeil L. | 2:0 (7:65, 6:4) | details | 03.07.1990 |
| 1/16-finals | Warder L./Thompson J. | Seguso R./McNeil L. | 1:2 (3:6, 7:63, 3:6) | details | 01.07.1990 |
| 1/32-finals | Odizor N./Pfaff E. | Seguso R./McNeil L. | 1:2 (7:62, 3:6, 4:6) | details | 27.06.1990 |
 France: French Open - Mixed Doubles - Main |
|---|
| 1/32-finals | Seguso R./McNeil L. | Mortensen M./Scheuer-Larsen T. | 0:2 (2:6, 3:6) | details | 28.05.1990 |
