| 1122.4 | 1118.9 | 36 | 36 | Claassen, DC (David Christian) | | NCP | 1274 | 1273.7 | Hopetown Chess Tournament 3 2026 (C) | 5 | 2026-07-25 | S | B | 0.5 | 0.28 | 0.22 | 6.6 | 0.28 | 0.22 | 8 |
| 1136.8 | 1136.2 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1174.5 | 1173 | Hopetown Chess Tournament 2026 (U16+U18) | 3 | 2026-02-07 | S | W | 0 | 0.5 | -0.5 | -8.4 | 0.5 | -0.5 | -10 |
| 1122.1 | 1120.9 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1177.5 | 1179.5 | Hopetown Schools Open 2025 (U15) | 5 | 2025-08-01 | S | W | 1 | 0.48 | 0.52 | 8.6 | 0.47 | 0.53 | 10.6 |
| 1091.6 | 1099.2 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1172.4 | 1167.6 | 2024 HSDA Open 3 (U13) | 4 | 2024-07-27 | S | B | 1 | 0.36 | 0.64 | 10.8 | 0.38 | 0.62 | 12.4 |
| 1010 | 998.4 | 20 | 20 | Claassen, D (David Christian) | | NCP | 1157.6 | 1150.7 | HSDA School Open 2024 (U12+U14) | 3 | 2024-01-27 | S | B | 0 | 0.29 | -0.29 | -4.9 | 0.28 | -0.28 | -5.6 |
