| 1644.2 | 1634.7 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1828.9 | 1825.2 | 2025 Tshwane Chess OPEN Registration Tournament (A1) | 4 | 2025-01-25 | S | W | 0 | 0.33 | -0.33 | -5.5 | 0.32 | -0.32 | -6.4 |
| 1595.8 | 1585.4 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1532.9 | 1517 | 2024 Silver Lakes Open Chess Tournament (B) | 4 | 2024-04-20 | S | B | 0.5 | 0.53 | -0.03 | -0.5 | 0.54 | -0.04 | -0.8 |
| 1464.1 | 1445.4 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1495.8 | 1480.8 | Silver Lakes Open Chess Tournament (B) | 2 | 2023-04-15 | S | W | 0 | 0.5 | -0.5 | -8.3 | 0.5 | -0.5 | -10 |
| 1464.1 | 1445.4 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1495.8 | 1480.8 | 2023 South African Junior Closed Chess Championships (U12 Open) | 1 | 2023-03-31 | S | W | 1 | 0.5 | 0.5 | 10 | 0.5 | 0.5 | 10 |
| 1283.4 | 1272.1 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1335.3 | 1320.9 | South African Junior Closed Chess Championships 2022 (U12 Open) | 3 | 2022-03-29 | S | W | 0 | 0.48 | -0.48 | -9.6 | 0.48 | -0.48 | -9.6 |
| 1323.6 | 1314.2 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1330.4 | 1312.9 | 2021 Alekhine Open (C) | 1 | 2021-08-14 | S | W | 0 | 0.53 | -0.53 | -10 | 0.54 | -0.54 | -10.8 |
