| Tournament | Round | Marie London | John Barker |
| 08.06.1998 Victorian Championships (VIC) | 13 | 393 | 379 |
| 05.04.1999 Australian Championships (NSW) | 5 | 458 | 366 |
| 18.09.2005 Australian Masters & State Challenge Trophy (VIC) | 14 | 348 | 539 |
| 17.04.2006 Australian Championships (QLD) | 10 | 375 | 528 |
| 17.04.2006 Australian Championships (QLD) | 21 | 334 | 336 |
| 13.09.2008 MASTERS AND STATE CHALLENGE TROPHY (VIC) | 4 | 385 | 436 |
| 05.04.2010 Aus Championship (SA) | 19 | 398 | 381 |
| 25.04.2011 Aus Championship (ACT) | 15 | 369 | 313 |
| 01.04.2013 Australian Championship (QLD) | 13 | 426 | 324 |
| 21.04.2014 Australian Championship (NSW) | 8 | 286 | 378 |
| 21.04.2014 Australian Championship (NSW) | 15 | 350 | 380 |
| 28.03.2016 Australian Championship (SA) | 11 | 380 | 479 |
| Head-to-head after 12 games | 5 | 7 | |
| Average score | 375.16 | 403.25 | |
| Spread: | -337 | 337 | |