| Tournament | Round | Khwanjai Thammaping | Arlene Williams |
| 21.04.2014 Australian Championship (NSW) | 10 | 262 | 413 |
| 06.04.2015 Australian Championship (VIC) | 8 | 409 | 342 |
| 29.01.2017 City of Sydney International Masters (NSW) | 17 | 317 | 365 |
| 14.05.2017 Tri-State (ACT) | 5 | 300 | 407 |
| 29.03.2018 Nats Warmup (ACT) | 2 | 350 | 414 |
| 16.04.2022 Australian Championship (QLD) | 12 | 345 | 384 |
| Head-to-head after 6 games | 1 | 5 | |
| Average score | 330.5 | 387.5 | |
| Spread: | -342 | 342 | |