| Tournament | Round | Gloria Gallagher | Trevor Halsall |
| 25.01.1998 City of Sydney International Masters (NSW) | 2 | 403 | 393 |
| 14.02.1998 Wollongong WORDS Valentine (NSW) | 7 | 338 | 357 |
| 15.03.1998 Sutherland (NSW) | 4 | 336 | 401 |
| 21.01.1999 City of Sydney Masters (NSW) | 12 | 420 | 444 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 374.25 | 398.75 | |
| Spread: | -98 | 98 | |