| 1664.2 | 1664.2 | 28 | 28 | Van Der Westhuizen, M (Mika) | | WOS | 1502.3 | 1522.9 | South African Junior Closed Chess Championship 2026 (U14 Girls) | 6 | 2026-03-31 | S | W | 0.5 | 0.73 | -0.23 | -6.4 | 0.71 | -0.21 | -5.8 |
| 1599.4 | 1577.5 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1541 | 1551.7 | 2025 Mzansi Individual Championships (U14 Girls) | 3 | 2025-12-18 | S | W | 0 | 0.61 | -0.61 | -12.2 | 0.57 | -0.57 | -11.4 |
| 1610.9 | 1601 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1400.2 | 1420.4 | West Coast And Mykonos Open 2025 (U14) | 5 | 2025-05-04 | S | B | 1 | 0.7 | 0.3 | 5.6 | 0.67 | 0.33 | 6.6 |
| 1621.6 | 1607.4 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1391.6 | 1418.8 | South African Junior Closed Chess Championships 2025 (U14 Girls) | 8 | 2025-04-04 | S | B | 1 | 0.73 | 0.27 | 5.4 | 0.68 | 0.32 | 6.4 |
| 1489.2 | 1476 | 20 | 20 | Van Der Westhuizen, M (Mika) | | WOS | 1379.6 | 1391.2 | Mzansi Interprovincial Youth Chess Championships 2024 (U14 Girls Championship) | 1 | 2024-12-16 | S | W | 1 | 0.67 | 0.33 | 6.6 | 0.64 | 0.36 | 7.2 |
