France: Lyon 2 - Doubles - Main |
| Quarter-finals | Stafford G./Ullyett K. | MacPhie B./Reneberg R. | 1:2 (3:6, 6:3, 3:6) | details | 15.10.1998 |
| 1/8-finals | Stafford G./Ullyett K. | Albano P./Tarango J. | 2:0 (6:4, 6:4) | details | 13.10.1998 |
Austria: Vienna - Doubles - Main |
| 1/8-finals | Stafford G./Ullyett K. | Kafelnikov Y./Vacek D. | 0:2 (4:6, 4:6) | details | 12.10.1998 |
USA: US Open - Doubles - Main |
| 1/16-finals | Stafford G./Ullyett K. | Bergh F./Nyborg P. | 0:2 (3:6, 5:7) | details | 04.09.1998 |
| 1/32-finals | Eagle J./Florent A. | Stafford G./Ullyett K. | 1:2 (6:3, 3:6, 4:6) | details | 02.09.1998 |
USA: Indianapolis - Doubles - Main |
| Quarter-finals | Novak J./Rikl D. | Stafford G./Ullyett K. | 2:1 (7:5, 4:6, 6:1) | details | 21.08.1998 |
| 1/8-finals | Stafford G./Ullyett K. | Johnson D./Montana F. | 2:0 (6:2, 6:4) | details | 19.08.1998 |
| 1/16-finals | Stafford G./Ullyett K. | Kitinov A./Ketola T. | 2:0 (6:2, 7:6) | details | 17.08.1998 |
Canada: Toronto - Doubles - Main |
| 1/16-finals | Coupe B./Randall D. | Stafford G./Ullyett K. | 2:0 (6:3, 6:4) | details | 03.08.1998 |
USA: Los Angeles - Doubles - Main |
| Quarter-finals | Stafford G./Ullyett K. | Rafter P./Stolle S. | 0:2 (5:7, 3:6) | details | 29.07.1998 |
| 1/8-finals | Coupe B./Kinnear K. | Stafford G./Ullyett K. | 0:2 (3:6, 3:6) | details | 27.07.1998 |
USA: Washington - Doubles - Main |
| Final | Ferreira W./Galbraith P. | Stafford G./Ullyett K. | 0:2 (2:6, 4:6) | details | 26.07.1998 |
| Semi-finals | Stafford G./Ullyett K. | Bryan B./Bryan M. | 2:1 (4:6, 6:3, 6:4) | details | 25.07.1998 |
| Quarter-finals | Stafford G./Ullyett K. | MacPherson D./Wheaton D. | 2:0 (6:3, 7:5) | details | 24.07.1998 |
| 1/8-finals | Stafford G./Ullyett K. | Goldstein P./Humphries S. | 2:0 (6:3, 7:6) | details | 22.07.1998 |
| 1/16-finals | Stafford G./Ullyett K. | Gambill J./Gambill T. | 2:0 (6:2, 6:3) | details | 20.07.1998 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | Bjorkman J./Rafter P. | Stafford G./Ullyett K. | 2:0 (6:3, 7:5) | details | 26.06.1998 |
| 1/32-finals | Stafford G./Ullyett K. | Nijssen T./Noteboom S. | 2:1 (7:68, 4:6, 9:7) | details | 24.06.1998 |
United Kingdom: London - Doubles - Main |
| 1/16-finals | Stafford G./Ullyett K. | Black B./O'Brien A. | 0:2 (5:7, 3:6) | details | 08.06.1998 |
France: French Open - Doubles - Main |
| 1/16-finals | Stafford G./Ullyett K. | Johnson D./Montana F. | 1:2 (6:2, 3:6, 4:6) | details | 31.05.1998 |
| 1/32-finals | Stafford G./Ullyett K. | Adams D./Dosedel S. | 2:0 (6:4, 6:2) | details | 29.05.1998 |
Austria: St. Poelten - Doubles - Main |
| 1/8-finals | Stafford G./Ullyett K. | Adams D./Black W. | 0:2 (3:6, 2:6) | details | 24.05.1998 |
USA: Coral Springs - Doubles - Main |
| Final | Merklein M./Spadea V. | Stafford G./Ullyett K. | 0:2 (5:7, 4:6) | details | 10.05.1998 |
| Semi-finals | Stafford G./Ullyett K. | Pimek L./Talbot B. | 2:1 (3:6, 6:4, 7:6) | details | 08.05.1998 |
| Quarter-finals | Nijssen T./VanHoudt T. | Stafford G./Ullyett K. | 1:2 (3:6, 6:3, 2:6) | details | 06.05.1998 |
| 1/8-finals | Gimelstob J./Keil M. | Stafford G./Ullyett K. | 0:2 (4:6, 1:6) | details | 04.05.1998 |
USA: Verizon Tennis Challenge - Doubles - Main |
| Semi-finals | O'Brien A./Reneberg R. | Stafford G./Ullyett K. | 2:0 (6:3, 6:2) | details | 01.05.1998 |
| Quarter-finals | Bryan B./Bryan M. | Stafford G./Ullyett K. | 0:2 (4:6, 4:6) | details | 29.04.1998 |
| 1/8-finals | Stafford G./Ullyett K. | Coupe B./VanHoudt T. | 2:0 (6:3, 6:4) | details | 27.04.1998 |
USA: Orlando - Doubles - Main |
| Final | Tillstrom M./Tebbutt M. | Stafford G./Ullyett K. | 1:2 (6:4, 4:6, 5:7) | details | 26.04.1998 |
| Semi-finals | Haggard C./Rosner P. | Stafford G./Ullyett K. | 0:2 (4:6, 6:7) | details | 24.04.1998 |
| Quarter-finals | Merklein M./Spadea V. | Stafford G./Ullyett K. | 1:2 (7:5, 6:7, 5:7) | details | 22.04.1998 |
| 1/8-finals | Stafford G./Ullyett K. | Randall D./Waite J. | 2:0 (6:0, 6:3) | details | 20.04.1998 |
USA: Miami - Doubles - Main |
| 1/16-finals | Stafford G./Ullyett K. | Suk C./Stolle S. | 1:2 (7:6, 4:6, 3:6) | details | 19.03.1998 |
| 1/32-finals | Stafford G./Ullyett K. | Mirnyi M./Tarango J. | 2:0 (7:5, 6:4) | details | 16.03.1998 |
Australia: Australian Open - Doubles - Main |
| 1/32-finals | Apell J./Black W. | Stafford G./Ullyett K. | 2:1 (7:5, 5:7, 6:1) | details | 19.01.1998 |
Czech Republic: Ostrava - Doubles - Main |
| Semi-finals | Stafford G./Ullyett K. | Novak J./Rikl D. | 0:2 (4:6, 4:6) | details | 18.10.1997 |
| Quarter-finals | Braasch K./Nyborg P. | Stafford G./Ullyett K. | 0:2 (2:6, 6:7) | details | 15.10.1997 |
| 1/8-finals | Stafford G./Ullyett K. | Jones K./O'Brien A. | 2:0 (6:4, 6:0) | details | 13.10.1997 |