| Tournament | Round | Carol Johnsen | Trevor Tao |
| 05.12.2009 Border Challenge (SA) | 8 | 404 | 453 |
| 23.10.2010 Vic/SA Border Challenge (VIC) | 7 | 385 | 434 |
| 16.10.2011 SA/Vic Border Challenge (SA) | 6 | 423 | 387 |
| 07.10.2012 Vic/SA Border Challenge (VIC) | 6 | 409 | 341 |
| 14.07.2013 SA/Vic Border Challenge (SA) | 8 | 343 | 356 |
| 19.10.2014 SA/Vic Border Challenge (VIC) | 1 | 298 | 613 |
| 16.10.2016 Vic/SA Border Challenge (VIC) | 6 | 293 | 466 |
| 21.10.2018 VicSA Border Challenge (VIC) | 8 | 400 | 512 |
| 08.03.2020 SA Championship (SA) | 5 | 261 | 452 |
| 06.03.2021 SA Champs (SA) | 14 | 468 | 468 |
| Head-to-head after 10 games | 2.5 | 7.5 | |
| Average score | 368.4 | 448.2 | |
| Spread: | -798 | 798 | |