| Tournament | Round | Geoff Shepheard | Alan Mathews |
| 14.03.2021 Joy Deans Memorial (WA) | 3 | 390 | 398 |
| 06.06.2021 WASC2021 (WA) | 3 | 423 | 374 |
| 10.12.2023 Graham Bell Memorial (WA) | 7 | 373 | 390 |
| 02.06.2024 WA State Championship (WA) | 1 | 462 | 405 |
| 08.12.2024 Graham Bell Memorial (WA) | 1 | 429 | 319 |
| 01.06.2025 WA Championship 2025 (WA) | 8 | 405 | 259 |
| 19.04.2026 Joy Deans Memorial (WA) | 5 | 399 | 371 |
| Head-to-head after 7 games | 5 | 2 | |
| Average score | 411.57 | 359.42 | |
| Spread: | 365 | -365 | |