| 1737.7 | 1743.1 | 28 | 28 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1702.7 | 1699.8 | 2026 D4 District Individuals (U15 Boys) | 4 | 2026-05-30 | S | B | 1 | 0.5 | 0.5 | 11.6 | 0.51 | 0.49 | 13.8 |
| 1733.6 | 1741.4 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1714.7 | 1712.6 | 2025 Etienne Lewis Closed Chess Tournament (U16) | 4 | 2025-08-09 | S | W | 0 | 0.56 | -0.56 | -10.5 | 0.58 | -0.58 | -11.6 |
| 1706.5 | 1701.5 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1694.4 | 1715 | 2025 Tshwane South School District Individual Finals (D4) (U15 Boys) | 4 | 2025-05-10 | S | B | 0.5 | 0.47 | 0.03 | 0.5 | 0.44 | 0.06 | 1.2 |
| 1456 | 1454.8 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1514.8 | 1501 | South African Junior Closed Chess Championship 2024 (U14 Open) | 3 | 2024-04-28 | S | W | 1 | 0.47 | 0.53 | 10.6 | 0.49 | 0.51 | 10.2 |
| 1498.6 | 1496.7 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1587.5 | 1580.2 | 2023 Etienne Lewis Closed Tournament (U14) | 7 | 2023-08-27 | S | B | 0 | 0.35 | -0.35 | -6.6 | 0.36 | -0.36 | -7.2 |
