| 1287.4 | 1292.2 | 20 | 20 | Vermeulen, JB (Johannes Bernardus) | | NCP | 1287 | 1290.1 | Northern Cape Closed 202 (U12 Open) | 5 | 2025-08-23 | S | B | 1 | 0.46 | 0.54 | 10.2 | 0.46 | 0.54 | 10.8 |
| 1287.4 | 1292.2 | 20 | 20 | Vermeulen, JB (Johannes Bernardus) | | NCP | 1287 | 1290.1 | Hopetown Schools Open 2025 (U11) | 5 | 2025-08-01 | S | B | 0 | 0.46 | -0.46 | -7.6 | 0.46 | -0.46 | -9.2 |
| 1266 | 1272.5 | 20 | 20 | Vermeulen, JB (Johannes Bernardus) | | NCP | 1265.8 | 1263 | Karpov Chess Club Open 2025 | 5 | 2025-03-15 | S | B | 1 | 0.46 | 0.54 | 9 | 0.47 | 0.53 | 10.6 |
| 1253.6 | 1260.3 | 20 | 20 | Vermeulen, JB (Johannes Bernardus) | | NCP | 1225.4 | 1217.2 | 2024 Kimberley Chess Club Christmas Open (Bishops) | 3 | 2024-12-07 | S | W | 0 | 0.57 | -0.57 | -9.6 | 0.59 | -0.59 | -11.8 |
