McCormack, Jacob
Current rating: 1399
Record: 6-13
| Regional Championships Melbourne 2023 (ONE standard) | starting rating: 1385 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 53 | Cao, Vincent (1471) | Won 2-1 | +201405 |
| 2standard | 15 | Zhao, Daniel (1464) | Lost 1-2 | -171388 |
| 3standard | 42 | Lim, Alexander [AUS] (1497) | Lost 1-2 | -161372 |
| 4standard | 42 | Wells, Doug (1452) | Won 2-1 | +191391 |
| 5standard | 27 | Virgona, Andrew (1499) | Lost 0-2 | -161375 |
| 6standard | 42 | Munro, Scott (1414) | Lost 0-2 | -171358 |
| 7standard | 41 | Weyers, Beau (1496) | Won 2-1 | +211379 |
| 8standard | 36 | Terry, Jye (1488) | Won 2-0 | +201399 |
| top | average opponent: 1473record: 4-4 | new rating: 1399 | ||
| Grand Prix Brisbane 2019 (ELD standard) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 161 | Marlow, Cayson (1464) | Lost 1-2 | -171421 |
| 2standard | 154 | Merriman, Jamie (1484) | Lost 0-2 | -171404 |
| 3standard | 213 | Boian, David (1370) | Lost 0-2 | -191385 |
| top | average opponent: 1439record: 0-3 | new rating: 1385 | ||
| Grand Prix Sydney 2019 (RNA limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 72 | Moore, James [AUS] (1518) | Lost 1-2 | -181470 |
| 2sealed | 140 | Swannack, Cole (1692) | Lost 1-2 | -141456 |
| 3sealed | 246 | Millar, Nick (1464) | Lost 0-2 | -181438 |
| top | average opponent: 1558record: 0-3 | new rating: 1438 | ||
| Grand Prix Melbourne 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 190 | Foster, Henry (1485) | Won 2-1 | +181518 |
| 2sealed | 37 | Connolly, Jc (1518) | Won 2-1 | +181536 |
| 3sealed | 34 | Lip, Quinton (1844) | Lost 1-2 | -131523 |
| 4sealed | 230 | Kotchoff, Michael (1469) | Lost 1-2 | -191504 |
| 5sealed | 178 | Darmanin, Chris (1589) | Lost 1-2 | -161488 |
| top | average opponent: 1581record: 2-3 | new rating: 1488 | ||