Select tournament type
| Quarter-finals | Custer B. | Lewis D. | 2:0 (7:5, 6:2) | details | 14.01.1991 | ||
| Semi-finals | Lewis D. | Flach K. | 0:2 (4:6, 1:6) | details | 27.06.1990 | ||
| Quarter-finals | Yunis F. | Lewis D. | 1:2 (4:6, 6:3, 6:8) | details | 25.06.1990 | ||
| 1/16-finals | Mansdorf A. | Lewis D. | 2:0 (6:3, 7:5) | details | 10.04.1990 | ||
| 1/32-finals | Youl S. | Lewis D. | 0:2 (3:6, 4:6) | details | 09.04.1990 | ||
| 1/32-finals | DeVries S./MacPherson D. | Borwick N./Lewis D. | 2:0 (7:5, 6:3) | details | 14.01.1991 | ||
| 1/8-finals | Engel D./Lewis D. | Guy S./Steven B. | 1:2 (4:6, 6:4, 3:6) | details | 31.12.1990 | ||
| Final | Albano P./Engel D. | Borwick N./Lewis D. | 2:0 (6:3, 7:6) | details | 16.09.1990 | ||
| Semi-finals | Cane P./Mezzadri S. | Borwick N./Lewis D. | 1:2 (6:4, 5:7, 6:7) | details | 15.09.1990 | ||
| Quarter-finals | Borwick N./Lewis D. | Colombo S./Olhovskiy A. | 2:1 (7:6, 3:6, 6:2) | details | 13.09.1990 | ||
| 1/8-finals | Jonsson L./Strelba M. | Borwick N./Lewis D. | 0:2 (5:7, 0:6) | details | 10.09.1990 | ||
| 1/8-finals | Borwick N./Lewis D. | Fitzgerald J./Jarryd A. | 0:2 (6:7, 3:6) | details | 15.08.1990 | ||
| 1/8-finals | Nelson T./Shelton B. | Borwick N./Lewis D. | 2:1 (6:7, 6:4, 7:6) | details | 13.08.1990 | ||
| 1/16-finals | Caratti C./Herrera L. | Borwick N./Lewis D. | 0:2 (1:6, 6:7) | details | 13.08.1990 | ||
| Quarter-finals | Borwick N./Lewis D. | Foster A./Ireland D. | 0:2 (63:7, 4:6) | details | 25.06.1990 | ||
| 1/8-finals | Connell G./Michibata G. | Lewis D./Russell J. | 2:0 (6:3, 6:4) | details | 16.04.1990 | ||
| 1/8-finals | Lewis D./Russell J. | Brown N./Carlsson J. | 1:2 (5:7, 6:4, 4:6) | details | 11.04.1990 | ||