| Tournament | Round | Carol Johnsen | Daniel Piechnick |
| 29.06.2000 Bordertown (SA) | 1 | 438 | 319 |
| 29.06.2000 Bordertown (SA) | 5 | 346 | 534 |
| 29.06.2000 Bordertown (SA) | 12 | 364 | 319 |
| 18.11.2001 SA/Victoria Border Challenge (VIC) | 2 | 350 | 477 |
| 02.11.2003 SA/Victoria Border Challenge Dimboola (VIC) | 4 | 428 | 364 |
| 12.04.2004 Australian Championships (ACT) | 1 | 367 | 352 |
| 31.10.2004 SA/Victoria Border Challenge Dimboola (VIC) | 7 | 357 | 439 |
| 31.10.2004 SA/Victoria Border Challenge Dimboola (VIC) | 12 | 379 | 481 |
| 30.10.2005 Victoria/SA Border Challenge Dimboola (VIC) | 9 | 384 | 375 |
| 08.12.2007 Halls Gap Border Challenge SA:Vic (VIC) | 7 | 441 | 395 |
| 05.04.2010 Aus Championship (SA) | 5 | 398 | 417 |
| 23.10.2010 Vic/SA Border Challenge (VIC) | 8 | 292 | 532 |
| 17.04.2017 National Championship (WA) | 8 | 392 | 450 |
| 08.03.2020 SA Championship (SA) | 9 | 372 | 493 |
| 06.03.2021 SA Champs (SA) | 16 | 471 | 474 |
| 12.03.2022 SA Scrabble Champs (SA) | 13 | 299 | 557 |
| Head-to-head after 16 games | 6 | 10 | |
| Average score | 379.87 | 436.12 | |
| Spread: | -900 | 900 | |