| Tournament | Round | Barry Harridge | Khwanjai Thammaping |
| 07.05.2006 Matchplay Qualifier (VIC) | 4 | 480 | 323 |
| 06.01.2007 Marathon (VIC) | 22 | 394 | 349 |
| 12.01.2008 24 Hour Marathon (VIC) | 3 | 429 | 363 |
| 19.05.2019 Scrabble Generations (VIC) | 2 | 411 | 361 |
| 28.12.2025 Decathon 2025 (VIC) | 2 | 424 | 373 |
| Head-to-head after 5 games | 5 | 0 | |
| Average score | 427.6 | 353.8 | |
| Spread: | 369 | -369 | |