| 1242.7 | 1236.1 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1248.5 | 1244.5 | Northern Cape Closed 202 (U12 Girls) | 4 | 2025-08-23 | S | W | 0 | 0.54 | -0.54 | -10.2 | 0.53 | -0.53 | -10.6 |
| 1242.7 | 1236.1 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1248.5 | 1244.5 | Hopetown Schools Open 2025 (U11) | 3 | 2025-08-01 | S | B | 1 | 0.45 | 0.55 | 9.1 | 0.45 | 0.55 | 11 |
| 1274.2 | 1273.9 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1259.7 | 1258.3 | 2025 Hopetown Schools Chess Tournament (U11+U13) | 4 | 2025-05-17 | S | B | 0 | 0.48 | -0.48 | -8.1 | 0.48 | -0.48 | -9.6 |
| 1227.9 | 1220.6 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1182 | 1181.5 | 2025 Frances Baard Schools Open IV (U9+U11) | 1 | 2025-04-17 | S | W | 1 | 0.6 | 0.4 | 6.7 | 0.59 | 0.41 | 8.2 |
| 1177.2 | 1174.5 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1156.3 | 1151.7 | 2024 Kimberley Chess Club Christmas Open (Bishops) | 3 | 2024-12-07 | S | B | 0 | 0.48 | -0.48 | -8.1 | 0.48 | -0.48 | -9.6 |
| 1073 | 1064.4 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1065.7 | 1054.4 | 2024 NC Closed Chess Championships (U12 Girls) | 2 | 2024-08-24 | S | W | 1 | 0.55 | 0.45 | 8.5 | 0.55 | 0.45 | 9 |
| 1073 | 1064.4 | 20 | 20 | Van Zyl, J (Johanna) | | NCP | 1065.7 | 1054.4 | 2024 Pixley Ka Seme Chess Schools Open 2 (U11) | 4 | 2024-08-03 | S | B | 0 | 0.47 | -0.47 | -7.9 | 0.47 | -0.47 | -9.4 |
| 1113 | 1108.8 | 20 | 20 | Van Zyl, J (Johanna) | | NCJ | 1139.3 | 1142 | Frances Baard Grand Prix 1.0 2024 (U12) | 4 | 2024-06-29 | S | W | 0 | 0.51 | -0.51 | -8.6 | 0.5 | -0.5 | -10 |
| 1075.7 | 1063.6 | 20 | 20 | Van Zyl, J (Johanna) | | NCJ | 1099.4 | 1083.2 | Hopetown Open Chess Tournament 2024 (U12) | 4 | 2024-02-10 | S | B | 1 | 0.43 | 0.57 | 9.6 | 0.44 | 0.56 | 11.2 |
| 1166.8 | 1160.8 | 20 | 20 | Van Zyl, J (Johanna) | | NCJ | 1168.1 | 1160.8 | Hopetown Schools Chess Open Tournament 2023 (U11) | 1 | 2023-02-25 | S | B | 0 | 0.46 | -0.46 | -7.7 | 0.46 | -0.46 | -9.2 |
