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