| 1617.3 | 1613 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1490.2 | 1494.5 | Cape Winelands Open 2025 (U14) | 5 | 2025-07-19 | S | B | 0 | 0.61 | -0.61 | -10.1 | 0.6 | -0.6 | -12 |
| 1588.2 | 1611.6 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1400.2 | 1420.4 | Western Cape Schools Individual Championship 2025 (U13 Girls) | 3 | 2025-05-17 | S | B | 0 | 0.68 | -0.68 | -11.3 | 0.68 | -0.68 | -13.6 |
| 1455.2 | 1455.2 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1400.9 | 1256.7 | Kingsway Chess Open 2024 (U12) | 2 | 2024-09-14 | R | W | 0 | 0.6 | -0.6 | -5.6 | 0.77 | -0.77 | -15.4 |
| 1441.7 | 1411.4 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1410.4 | 1418.4 | 2023 Western Cape Rural Cup (U12) | 5 | 2023-12-10 | S | W | 0 | 0.58 | -0.58 | -9.6 | 0.53 | -0.53 | -10.6 |
| 1433.9 | 1465.1 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1411.6 | 1342 | Bonnievale Open Rapid 2023 (U12) | 6 | 2023-10-21 | R | B | 1 | 0.48 | 0.52 | 5.6 | 0.6 | 0.4 | 8 |
