| Tournament | Round | Trevor Halsall | Nancy Sparling |
| 05.04.1998 Victor Harbour (SA) | 2 | 400 | 369 |
| 13.02.2000 South Australian Championships (SA) | 14 | 364 | 423 |
| 18.11.2001 SA/Victoria Border Challenge (VIC) | 4 | 439 | 309 |
| 08.03.2003 South Australian Championships (SA) | 9 | 400 | 347 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 400.75 | 362 | |
| Spread: | 155 | -155 | |