| Tournament | Round | Khwanjai Thammaping | Betty Foreman |
| 21.04.2014 Australian Championship (NSW) | 9 | 398 | 285 |
| 21.04.2014 Australian Championship (NSW) | 24 | 307 | 391 |
| 29.01.2017 City of Sydney International Masters (NSW) | 13 | 435 | 377 |
| 22.04.2019 2019 Australian Championship (TAS) | 18 | 357 | 347 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 374.25 | 350 | |
| Spread: | 97 | -97 | |