| 1577.4 | 1562.1 | 20 | 20 | Van Der Merwe, ZC (Zander Christiaan) | | GTP | 1525.5 | 1522.3 | 2025 Silver Lakes Chess Club Open Chess Tournament (U12) | 3 | 2025-05-03 | S | W | 1 | 0.6 | 0.4 | 6.6 | 0.59 | 0.41 | 8.2 |
| 1626 | 1623.6 | 20 | 20 | Van Der Merwe, ZC (Zander Christiaan) | | GTP | 1536.1 | 1532.3 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 3 | 2025-01-25 | S | B | 1 | 0.56 | 0.44 | 7.3 | 0.56 | 0.44 | 8.8 |
| 1354.8 | 1354.8 | 20 | 20 | Van Der Merwe, ZC (Zander Christiaan) | | GTP | 1295.8 | 1277.6 | 2023 Gauteng Top Schools (U9 Mixed) | 5 | 2023-08-18 | S | W | 1 | 0.61 | 0.39 | 6.5 | 0.63 | 0.37 | 7.4 |
| 1354.8 | 1354.8 | 20 | 20 | Van Der Merwe, ZC (Zander Christiaan) | | GTP | 1295.8 | 1277.6 | 2023 Etienne Lewis Closed Tournament (U10) | 5 | 2023-08-27 | S | B | 0.5 | 0.53 | -0.03 | -0.6 | 0.55 | -0.05 | -1 |
| 1303.3 | 1286.3 | 20 | 20 | Van Der Merwe, ZC (Zander Christiaan) | | GTP | 1343.6 | 1332 | 2023 Tshwane South School District CLOSED League Championship (U9) | 2 | 2023-07-29 | S | W | 1 | 0.49 | 0.51 | 8.5 | 0.49 | 0.51 | 10.2 |
