Thatcher, Calum
Current rating: 1437
Record: 6-10
| Regional Championships Sydney 2023 (pioneer) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 69 | Zegveld, Malcolm (1507) | Lost 1-2 | -181492 |
| 2pioneer | 75 | Sullivan, Campbell (1463) | Lost 1-2 | -181474 |
| 3pioneer | 75 | Kucukovic, Dino (1412) | Won 2-0 | +171491 |
| 4pioneer | 73 | Kong, William (1483) | Lost 1-2 | -181473 |
| 5pioneer | 71 | Hilzinger, Joshua (1453) | Lost 1-2 | -191454 |
| 6pioneer | 63 | Chan, Gordon (1391) | Won 2-1 | +171471 |
| 7pioneer | 56 | Tolonen, Lewis (1569) | Lost 1-2 | -161455 |
| 8pioneer | 54 | Dewitte, Matthew (1462) | Lost 1-2 | -181437 |
| average opponent: 1468record: 2-6 | new rating: 1437 | |||
| Regional Championships Sydney 2022 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 35 | sweetman, Craig (1500) | Won 2-1 | +181518 |
| 2pioneer | 35 | Martin, George (1518) | Lost 1-2 | -181500 |
| 3pioneer | 28 | Hallam-Walsh, Gideon (1590) | Lost 1-2 | -161484 |
| 4pioneer | 41 | Cao, Vincent (1471) | Won 2-1 | +171501 |
| 5pioneer | 29 | Maher, Samuel (1601) | Won 2-1 | +201521 |
| 6pioneer | 30 | Tattersall, Pierce (1519) | Won 2-0 | +181539 |
| 7pioneer | 14 | Wilks, James (1835) | Lost 1-2 | -131526 |
| 8pioneer | 31 | Kikkawa, Dillon (1637) | Lost 0-2 | -161510 |
| average opponent: 1584record: 4-4 | new rating: 1510 | |||