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