| Tournament | Round | David Vanzyl | Alan Mathews |
| 11.01.2015 TRIJAN (WA) | 4 | 461 | 287 |
| 06.12.2015 OPEN6DEC (WA) | 5 | 572 | 357 |
| 10.07.2016 Bisection July (WA) | 1 | 489 | 291 |
| 09.07.2017 BISAGM17 (WA) | 4 | 454 | 361 |
| 19.11.2017 Open Nov (WA) | 7 | 385 | 372 |
| 18.03.2018 Joy Deans Memorial (WA) | 5 | 443 | 393 |
| 26.09.2019 PERTH5 (WA) | 2 | 407 | 322 |
| 16.01.2020 PERTH7 (WA) | 4 | 491 | 282 |
| 05.03.2020 PERTH8 (WA) | 1 | 453 | 451 |
| 19.03.2023 March Round Robin (WA) | 5 | 359 | 370 |
| 16.04.2023 Joy Deans Memorial (WA) | 1 | 468 | 287 |
| 10.12.2023 Graham Bell Memorial (WA) | 1 | 299 | 426 |
| 14.01.2024 January Open (WA) | 1 | 517 | 295 |
| Head-to-head after 13 games | 11 | 2 | |
| Average score | 446 | 345.69 | |
| Spread: | 1304 | -1304 | |