| 1337.7 | 1324.1 | 20 | 20 | Visser, AJC (Alwyn Jacobus Christiaan) | | WCW | 1280 | 1213.2 | Robertson Strategema Chess May 2024 (U11) | 2 | 2024-05-11 | R | W | 1 | 0.61 | 0.39 | 4.7 | 0.67 | 0.33 | 6.6 |
| 1301 | 1293 | 20 | 20 | Visser, AJC (Alwyn Jacobus Christiaan) | | WCW | 1302.5 | 1299.3 | Robertson Chess Tournament Oct 2023 (U11) | 1 | 2023-10-28 | S | B | 0 | 0.46 | -0.46 | -7.6 | 0.45 | -0.45 | -9 |
| 1267 | 1257.1 | 20 | 20 | Visser, AJC (Alwyn Jacobus Christiaan) | | WCW | 1209 | 1210 | Strategema 2023 (Beginners-U9) | 4 | 2023-05-13 | S | B | 0 | 0.53 | -0.53 | -8.8 | 0.51 | -0.51 | -10.2 |
| 1206.1 | 1165.8 | 20 | 20 | Visser, AJC (Alwyn Jacobus Christiaan) | | WCW | 1244.3 | 1267.2 | Robertson Strategema Club 2022 (U9) | 4 | 2022-10-29 | S | B | 0 | 0.41 | -0.41 | -6.8 | 0.34 | -0.34 | -6.8 |
| 1216.9 | 1170.8 | 20 | 20 | Visser, AJC (Alwyn Jacobus Christiaan) | | WCW | 1182.9 | 1200 | Strategema 2022 (U9) | 1 | 2022-09-10 | S | B | 0 | 0.5 | -0.5 | -8.3 | 0.42 | -0.42 | -8.4 |
