| 1524.2 | 1518.4 | 32 | 32 | Van Der Merwe, O (Oliver) | | WEG | 1563 | 1526.1 | George Trials 3 2026 (U11 Boys) | 5 | 2026-02-28 | S | B | 1 | 0.41 | 0.59 | 15.6 | 0.45 | 0.55 | 17.6 |
| 1525.6 | 1242 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1568.3 | 1315.9 | HCPS Invitational Rapid Tournament 2025 (U11) | 3 | 2025-10-18 | R | B | 0 | 0.41 | -0.41 | -4.4 | 0.37 | -0.37 | -7.4 |
| 1527.1 | 1530.1 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1505.8 | 1511 | Eden Chess Trials 2 2024 (U10) | 7 | 2024-04-20 | S | W | 1 | 0.57 | 0.43 | 7.1 | 0.56 | 0.44 | 8.8 |
| 1528.4 | 1532.3 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1385.4 | 1385.9 | Eden School Chess Trials 1 2024 (U9 Boys) | 4 | 2024-03-09 | S | B | 0.5 | 0.62 | -0.12 | -2 | 0.63 | -0.13 | -2.6 |
| 1254.7 | 1250.6 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1302.9 | 1303.1 | George Open 2022 (D) | 5 | 2022-12-03 | S | B | 0 | 0.4 | -0.4 | -6.6 | 0.4 | -0.4 | -8 |
| 1279.8 | 1282.6 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1192.7 | 1188.8 | George Open 2022 (D) | 4 | 2022-06-11 | S | W | 0 | 0.64 | -0.64 | -10.9 | 0.65 | -0.65 | -13 |
| 1319.9 | 1338.4 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1181.8 | 1180 | Western Cape Schools 2022 (U7 Boys) | 2 | 2022-05-28 | S | W | 1 | 0.7 | 0.3 | 5.1 | 0.73 | 0.27 | 5.4 |
| 1332.8 | 1360 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1150.2 | 1140 | Eden Proewe 1 2022 (O7 Seuns) | 5 | 2022-03-12 | S | B | 0 | 0.67 | -0.67 | -11.4 | 0.71 | -0.71 | -14.2 |
| 1200 | 1200 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1200 | 1200 | George Trials 3 2022 (U7) | 2 | 2022-02-26 | S | B | 1 | 0.46 | 0.54 | 9 | 0.46 | 0.54 | 10.8 |
| 1200 | 1200 | 20 | 20 | Van Der Merwe, O (Oliver) | | WEG | 1200 | 1200 | George Trials 2 2022 (U7) | 5 | 2022-02-12 | S | B | 1 | 0.46 | 0.54 | 9 | 0.46 | 0.54 | 10.8 |
