| Tournament | Round | Elwyn Chalk | Colleen McCormick |
| 12.07.1998 WA Masters (WA) | 8 | 354 | 367 |
| 20.09.1998 Advanced Intermediate Recreation (WA) | 4 | 466 | 270 |
| 11.07.1999 Western Australian Masters (WA) | 5 | 429 | 377 |
| 08.08.1999 Bassendean (WA) | 5 | 369 | 399 |
| 17.10.1999 Rockingham (WA) | 3 | 326 | 412 |
| 25.06.2000 Advanced Intermediate Recreation (WA) | 4 | 326 | 437 |
| 24.03.2002 WA Marathon (WA) | 1 | 331 | 360 |
| 24.03.2002 WA Marathon (WA) | 10 | 337 | 433 |
| 21.04.2002 Nedlands (WA) | 2 | 469 | 325 |
| 08.09.2002 Yokine (WA) | 4 | 346 | 367 |
| 02.02.2003 Fremantle (WA) | 5 | 342 | 308 |
| 25.05.2003 Melville (WA) | 5 | 288 | 436 |
| 31.10.2004 Coogee (WA) | 6 | 368 | 371 |
| 06.02.2005 Fremantle (WA) | 3 | 382 | 361 |
| Head-to-head after 14 games | 5 | 9 | |
| Average score | 366.64 | 373.07 | |
| Spread: | -90 | 90 | |