| 1525.5 | 1522.3 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1577.4 | 1562.1 | 2025 Silver Lakes Chess Club Open Chess Tournament (U12) | 3 | 2025-05-03 | S | B | 0 | 0.4 | -0.4 | -6.6 | 0.41 | -0.41 | -8.2 |
| 1536.1 | 1532.3 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1626 | 1623.6 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 3 | 2025-01-25 | S | W | 0 | 0.44 | -0.44 | -7.3 | 0.44 | -0.44 | -8.8 |
| 1295.8 | 1277.6 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1354.8 | 1354.8 | 2023 Gauteng Top Schools (U9 Mixed) | 5 | 2023-08-18 | S | B | 0 | 0.39 | -0.39 | -6.5 | 0.37 | -0.37 | -7.4 |
| 1295.8 | 1277.6 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1354.8 | 1354.8 | 2023 Etienne Lewis Closed Tournament (U10) | 5 | 2023-08-27 | S | W | 0.5 | 0.47 | 0.03 | 0.6 | 0.45 | 0.05 | 1 |
| 1343.6 | 1332 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1303.3 | 1286.3 | 2023 Tshwane South School District CLOSED League Championship (U9) | 2 | 2023-07-29 | S | B | 0 | 0.51 | -0.51 | -8.5 | 0.51 | -0.51 | -10.2 |
