| 1400.8 | 1404.1 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1495.8 | 1480.8 | 2023 Tshwane South School District CLOSED Individual Championships (U13 Open) | 5 | 2023-04-22 | S | W | 0 | 0.43 | -0.43 | -7.1 | 0.45 | -0.45 | -9 |
| 1262 | 1220.6 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1374.6 | 1360.9 | 2021 Blou Bul Tournament (C) | 3 | 2021-04-10 | S | B | 0 | 0.33 | -0.33 | -5.5 | 0.29 | -0.29 | -5.8 |
| 1168.3 | 1139.2 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1423.9 | 1410.2 | 2019 D4 Individual Finals (U9 Mixed) | 3 | 2019-03-09 | S | B | 0 | 0.16 | -0.16 | -2.7 | 0.14 | -0.14 | -2.8 |
| 1164.3 | 1156.4 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1483 | 1472.1 | 2019 Tshwane Chess Registration Tournament (E) | 4 | 2019-01-26 | S | W | 0 | 0.17 | -0.17 | -2.8 | 0.17 | -0.17 | -3.4 |
| 1110.1 | 1095.6 | 20 | 20 | Slabbert, ZN (Zander Nicolaas) | | GTP | 1107.1 | 1084.6 | 2018 Etienne Lewis Trials (U8 Boys) | 5 | 2018-09-01 | S | B | 0 | 0.46 | -0.46 | -9.2 | 0.47 | -0.47 | -9.4 |
