| 1596.2 | 1439.3 | 20 | 20 | Van Der Merwe, S (Schalk Wolf) | JM | WCT | 1711.2 | 1709.5 | Curro Chess Open Rapid 2025 (U12) | 6 | 2025-08-23 | R | W | 0 | 0.41 | -0.41 | -4.4 | 0.23 | -0.23 | -4.6 |
| 1360.2 | 1410.6 | 20 | 20 | Van Der Merwe, S (Schalk Wolf) | | WCT | 1493.7 | 1652.7 | Kraaifontein Open 2023 (U10) | 3 | 2023-12-09 | R | B | 0 | 0.3 | -0.3 | -3.6 | 0.18 | -0.18 | -3.6 |
| 1336.7 | 1436 | 20 | 20 | Van Der Merwe, S (Schalk Wolf) | | WCT | 1447.8 | 1525 | Cape Town Open 2023 (U10) | 3 | 2023-03-25 | R | W | 0.5 | 0.41 | 0.09 | 1 | 0.44 | 0.06 | 1.2 |
| 1336.7 | 1436 | 20 | 20 | Van Der Merwe, S (Schalk Wolf) | | WCT | 1447.8 | 1525 | Cape Town Metro Schools Chess Closed Individuals 2023 (U9 Boys) | 3 | 2023-03-04 | R | W | 0 | 0.41 | -0.41 | -4.9 | 0.44 | -0.44 | -8.8 |
