Scrabble Australia
Tournaments: Johanne Costello : 1/1998 - 12/2026
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| Opponent Name | Total games | Wins | Draws | Losses | Win % |
| Beth Goodwin | 3 | 0 | 0 | 3 | 0.00% |
| Nonie English | 2 | 0 | 0 | 2 | 0.00% |
| Danny Khoury | 2 | 0 | 0 | 2 | 0.00% |
| Nanette Reynolds | 1 | 0 | 0 | 1 | 0.00% |
| Mary-Michal Oxby | 1 | 0 | 0 | 1 | 0.00% |
| Linda Pedersen | 1 | 0 | 0 | 1 | 0.00% |
| Arie Holla | 1 | 0 | 0 | 1 | 0.00% |
| Barbara Joffe | 1 | 0 | 0 | 1 | 0.00% |
| Sharon Sorensen | 1 | 0 | 0 | 1 | 0.00% |
| Gordon Meggs | 1 | 0 | 0 | 1 | 0.00% |
| Jan Serisier | 1 | 0 | 0 | 1 | 0.00% |
| Marion Miller | 1 | 0 | 0 | 1 | 0.00% |
| Sunny Wright | 1 | 0 | 0 | 1 | 0.00% |
| Rhonda Jones | 1 | 0 | 0 | 1 | 0.00% |
| Pat Schuberg | 1 | 0 | 0 | 1 | 0.00% |
| Michael McKenna | 1 | 0 | 0 | 1 | 0.00% |
| Garth van Vliet | 1 | 0 | 0 | 1 | 0.00% |
| Mary Morgan | 1 | 0 | 0 | 1 | 0.00% |
| Betty Foreman | 1 | 0 | 0 | 1 | 0.00% |
| Liz Jackman | 1 | 0 | 0 | 1 | 0.00% |
| Tisa Ng | 1 | 1 | 0 | 0 | 100.00% |
| Devorah Ullman | 1 | 0 | 0 | 1 | 0.00% |
| Frances De Lange | 1 | 0 | 0 | 1 | 0.00% |
| Sam van Vliet | 1 | 0 | 0 | 1 | 0.00% |
| Mary-michal Oxby | 1 | 0 | 0 | 1 | 0.00% |
| Angela Thorpe | 1 | 0 | 0 | 1 | 0.00% |
| Alice Pullen | 1 | 1 | 0 | 0 | 100.00% |
| Patricia Guy | 1 | 0 | 0 | 1 | 0.00% |
| Anne Mortel | 1 | 0 | 0 | 1 | 0.00% |
| Don Marsh | 1 | 0 | 0 | 1 | 0.00% |
| Diana Hilly | 1 | 0 | 0 | 1 | 0.00% |