| 1428.6 | 1411.5 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1512.4 | 1528.5 | George Trials 1 2026 (U11 Boys) | 5 | 2026-01-31 | S | W | 0 | 0.44 | -0.44 | -7.3 | 0.41 | -0.41 | -8.2 |
| 1443.2 | 1453 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1507 | 1514.7 | George Top Schools 2025 (U11) | 1 | 2025-07-26 | S | B | 0 | 0.38 | -0.38 | -6.3 | 0.39 | -0.39 | -7.8 |
| 1407.6 | 1409.6 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1520 | 1547.2 | Eden Chess Trials 2 2025 (U12) | 4 | 2025-03-15 | S | B | 0.5 | 0.33 | 0.17 | 2.8 | 0.3 | 0.2 | 4 |
| 1344.6 | 1335.5 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1515.7 | 1523.8 | George Schools Chess Trials 1 2025 (U11 Boys) | 5 | 2025-02-01 | S | W | 0 | 0.34 | -0.34 | -5.6 | 0.32 | -0.32 | -6.4 |
| 1358.2 | 1360 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1505.8 | 1511 | Eden Chess Trials 2 2024 (U10) | 6 | 2024-04-20 | S | B | 0 | 0.29 | -0.29 | -4.8 | 0.28 | -0.28 | -5.6 |
| 1240.1 | 1249.6 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1385.4 | 1385.9 | George Schools Trials 3 2024 (U9 Boys) | 2 | 2024-03-02 | S | W | 0 | 0.37 | -0.37 | -6.1 | 0.38 | -0.38 | -7.6 |
| 1158.8 | 1149.6 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1313.2 | 1287 | George Schools Trials 1 2024 (U9 Boys) | 4 | 2024-02-03 | S | B | 0 | 0.28 | -0.28 | -4.6 | 0.3 | -0.3 | -6 |
| 1200 | 1200 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1305.2 | 1303.9 | George Chess Trials 2 2023 (U9 Boys) | 1 | 2023-02-11 | S | B | 0 | 0.34 | -0.34 | -5.6 | 0.34 | -0.34 | -6.8 |
