| 1619.7 | 1627.8 | 20 | 20 | De Noon, SJ (Stian Johanco) | | NCP | 1319.3 | 1317.2 | De Aar Open Chess Tournament 2026 (B) | 3 | 2026-01-31 | S | W | 1 | 0.89 | 0.11 | 1.4 | 0.9 | 0.1 | 1.5 |
| 1544.9 | 1545.3 | 20 | 20 | De Noon, SJ (Stian Johanco) | | NCP | 1333.6 | 1331 | Northern Cape Closed 202 (U12 Open) | 4 | 2025-08-23 | S | B | 1 | 0.7 | 0.3 | 5.6 | 0.71 | 0.29 | 5.8 |
| 1565.4 | 1574.2 | 20 | 20 | De Noon, S (Stian Johanco) | | NCJ | 1183.8 | 1184.4 | 2024 NC Closed Chess Championships (U12 Open) | 4 | 2024-08-24 | S | W | 0 | 0.99 | -0.99 | -18.6 | 1 | -1 | -20 |
| 1492.5 | 1490 | 20 | 20 | De Noon, S (Stian Johanco) | | NCJ | 1167.8 | 1163.9 | 2024 Frances Baard Schools Open (U11) | 1 | 2024-02-03 | S | B | 1 | 0.84 | 0.16 | 2.7 | 0.84 | 0.16 | 3.2 |
