Australia: Australian Open - Doubles - Main |
| 1/32-finals | Luza G./Rosset M. | Castle A./Smith R. | 2:0 (6:4, 6:1) | details | 14.01.1991 |
Australia: Adelaide - Doubles - Main |
| Quarter-finals | Haarhuis P./Koevermans M. | Castle A./Smith R. | 2:0 (6:4, 6:4) | details | 02.01.1991 |
| 1/8-finals | Woodforde M./Woodbridge T. | Castle A./Smith R. | 1:2 (4:6, 6:4, 6:7) | details | 31.12.1990 |
USA: US Open - Doubles - Main |
| Quarter-finals | Castle A./Smith R. | Garrow B./Salumaa S. | 2:3 (3:6, 5:7, 7:5, 6:3, 3:6) | details | 06.09.1990 |
| 1/8-finals | Castle A./Smith R. | Deppe R./Garnett B. | 2:0 (6:4, 6:4) | details | 03.09.1990 |
| 1/16-finals | Cash P./Masur W. | Castle A./Smith R. | 1:2 (6:2, 3:6, 4:6) | details | 30.08.1990 |
| 1/32-finals | Castle A./Smith R. | Kruger S./Davis M. | 2:1 (6:3, 5:7, 6:2) | details | 27.08.1990 |