Roebuck, Cooper
Current rating: 1498
Record: 4-4
| Regional Championships Sydney 2023 Cycle 4 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 72 | Diment, Jim (1609) | Lost 0-2 | -161484 |
| 2pioneer | 42 | Norton, Dave (1432) | Won 2-0 | +171501 |
| 3pioneer | 42 | Lewin, Samuel (1428) | Lost 0-2 | -191482 |
| 4pioneer | 53 | Stone, Danny (1435) | Won 2-0 | +171499 |
| 5pioneer | 39 | Sparks, Damian (1432) | Won 2-0 | +171516 |
| 6pioneer | 19 | Jordan, Sebastian (1564) | Lost 0-2 | -171499 |
| 7pioneer | 30 | Landrigan, Zane (1439) | Lost 1-2 | -201479 |
| 8pioneer | 39 | Anderson, Jamie (1503) | Won 2-0 | +191498 |
| average opponent: 1480record: 4-4 | new rating: 1498 | |||