| Tournament | Round | George Khamis | Don Hadley |
| 03.10.2005 New South Wales Championships (NSW) | 4 | 357 | 376 |
| 03.10.2005 New South Wales Championships (NSW) | 21 | 372 | 351 |
| 25.02.2006 NSW Matchplay Qualifier (NSW) | 8 | 344 | 456 |
| 08.04.2006 Blacktown (NSW) | 6 | 238 | 344 |
| 14.10.2006 Spring Marathon (NSW) | 8 | 352 | 365 |
| 17.02.2007 Wollongong (NSW) | 1 | 312 | 476 |
| 02.06.2007 Woy Woy (NSW) | 5 | 386 | 379 |
| 07.07.2007 Chatswood (NSW) | 5 | 414 | 329 |
| 15.07.2007 Winter Challenge (NSW) | 6 | 301 | 379 |
| 11.01.2009 Baulkham Hills Yearly Nearly Early (NSW) | 1 | 322 | 415 |
| 05.10.2009 NSW CHAMPIONSHIPS (NSW) | 8 | 443 | 358 |
| 05.10.2009 NSW CHAMPIONSHIPS (NSW) | 20 | 319 | 410 |
| 17.10.2009 Spring Marathon (NSW) | 10 | 417 | 284 |
| 04.07.2010 Winter Challenge (NSW) | 5 | 410 | 377 |
| 03.04.2011 Tri-State (VIC) | 5 | 275 | 405 |
| 25.04.2011 Aus Championship (ACT) | 12 | 388 | 375 |
| 21.04.2014 Australian Championship (NSW) | 8 | 362 | 468 |
| 05.10.2015 NSW Championships (NSW) | 2 | 326 | 374 |
| 03.10.2016 NSW Championships (NSW) | 22 | 402 | 318 |
| 02.04.2018 2018 National Championship (ACT) | 4 | 431 | 465 |
| Head-to-head after 20 games | 8 | 12 | |
| Average score | 358.55 | 385.2 | |
| Spread: | -533 | 533 | |