| 1124.6 | 1130.3 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1174.5 | 1173 | De Aar Open Chess Tournament 2026 (C) | 2 | 2026-01-31 | S | W | 0 | 0.48 | -0.48 | -8.1 | 0.49 | -0.49 | -9.8 |
| 1118.7 | 1118.2 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1177.5 | 1179.5 | De Aar Primary School 2025 (U14) | 3 | 2025-08-16 | S | W | 0 | 0.47 | -0.47 | -7.9 | 0.47 | -0.47 | -9.4 |
| 1080 | 1070.8 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1157.9 | 1152.1 | 2024 NC Closed Chess Championships (U14 Open) | 2 | 2024-08-24 | S | W | 0 | 0.45 | -0.45 | -8.5 | 0.45 | -0.45 | -9 |
| 1132.3 | 1120.1 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1157.6 | 1150.7 | HSDA School Open 2024 (U12+U14) | 5 | 2024-01-27 | S | B | 0 | 0.43 | -0.43 | -7.2 | 0.42 | -0.42 | -8.4 |
| 1200 | 1200 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1200 | 1200 | Hopetown School Chess Open Tournament 2023 (U11+U13) | 3 | 2023-05-06 | S | B | 0 | 0.46 | -0.46 | -7.7 | 0.46 | -0.46 | -9.2 |
