| 1613 | 1742.8 | 20 | 20 | Campbell, G (Grant) | | WEG | 1529.2 | 1542.1 | Pacaltsdorp Open 2025 (Open) | 3 | 2025-08-29 | B | B | 0 | 0.56 | -0.56 | -2 | 0.69 | -0.69 | -13.8 |
| 1634.5 | 1541.2 | 20 | 20 | Campbell, G (Grant) | | WEG | 1537.7 | 1468.4 | 2025 Eden Open & Women's Tournament (Championship) | 4 | 2025-08-23 | S | W | 0.5 | 0.65 | -0.15 | -2.5 | 0.63 | -0.13 | -2.6 |
| 1346.4 | 1386 | 20 | 20 | Campbell, G (Grant) | | WEG | 1346.1 | 1362.2 | George Trial 3 2020 (U18+U20) | 3 | 2020-02-22 | S | W | 0 | 0.54 | -0.54 | -9.2 | 0.57 | -0.57 | -11.4 |
| 1346.4 | 1386 | 20 | 20 | Campbell, G (Grant) | | WEG | 1346.1 | 1362.2 | George Trial 2 2020 (U18+U20) | 3 | 2020-02-08 | S | B | 1 | 0.46 | 0.54 | 9.2 | 0.49 | 0.51 | 10.2 |
| 1345.1 | 1112.8 | 20 | 20 | Campbell, G (Grant) | | WEG | 1377.3 | 1050.6 | 2019 South African Juior Blitz Championship (A) | 5 | 2020-01-05 | B | B | 1 | 0.42 | 0.58 | 2.1 | 0.53 | 0.47 | 9.4 |
| 1361.9 | 1405.6 | 20 | 20 | Campbell, G (Grant) | | WEG | 1381.9 | 1420.8 | George Open Chess Tournament 2019 (A) | 4 | 2019-11-30 | S | W | 0 | 0.52 | -0.52 | -8.8 | 0.52 | -0.52 | -10.4 |
| 1209.2 | 1213.9 | 20 | 20 | Campbell, G (Grant) | | WEG | 1254.8 | 1250.6 | George Trials 3 2019 (U18) | 3 | 2019-02-23 | S | B | 0 | 0.41 | -0.41 | -6.8 | 0.42 | -0.42 | -8.4 |
| 1187.3 | 1186.7 | 20 | 20 | Campbell, G (Grant) | | WEG | 1272.1 | 1271.5 | George Trials 1 2019 (U18) | 2 | 2019-01-26 | S | B | 1 | 0.36 | 0.64 | 10.6 | 0.36 | 0.64 | 12.8 |
| 1146 | 1146 | 20 | 20 | Campbell, G (Grant) | | WEG | 700.6 | 700.6 | George Trails 1 2018 (U16) | 2 | 2018-01-27 | S | B | 1 | 0.98 | 0.02 | 0.3 | 0.98 | 0.02 | 0.4 |
