| 1526.7 | 1548 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1324.6 | 1336.6 | North District School Trials 2024 (U18 Girls) | 4 | 2024-02-03 | S | B | 1 | 0.69 | 0.31 | 5.1 | 0.7 | 0.3 | 6 |
| 1540.8 | 1522.4 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1302 | 1294.5 | Cape Town Metro Schools Chess Closed Individuals 2023 (U15 Girls) | 6 | 2023-03-04 | S | W | 1 | 0.82 | 0.18 | 3 | 0.81 | 0.19 | 3.8 |
| 1504 | 1503.6 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1233 | 1209.2 | North District School Trials 2023 (U15 Girls) | 2 | 2023-02-03 | S | B | 1 | 0.77 | 0.23 | 3.8 | 0.8 | 0.2 | 4 |
| 1481.9 | 1430.5 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1266 | 1262.4 | Western Cape Schools Chess 2022 (U15 Girls) | 2 | 2022-05-07 | S | W | 1 | 0.79 | 0.21 | 3.6 | 0.74 | 0.26 | 5.2 |
| 1412.7 | 1378.7 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1255.7 | 1212.4 | SA National Team School Chess Championships 2022 (Girls) | 2 | 2022-02-04 | S | B | 1 | 0.64 | 0.36 | 6 | 0.65 | 0.35 | 7 |
| 1459.6 | 1450.4 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1259.7 | 1256.1 | 2020 Metro Trials (U13 Girls) | 2 | 2020-03-14 | S | W | 1 | 0.77 | 0.23 | 3.8 | 0.77 | 0.23 | 4.6 |
| 1453.4 | 1440.8 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1168.9 | 1146.1 | Metro North Individual Trials 2020 (U13) | 2 | 2020-02-07 | S | B | 1 | 0.79 | 0.21 | 3.5 | 0.8 | 0.2 | 4 |
| 1344.2 | 1332.8 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1047 | 1058.3 | Western Cape Schools Individuals 2019 (U11 Girls) | 1 | 2019-05-18 | S | B | 1 | 0.8 | 0.2 | 3.3 | 0.78 | 0.22 | 4.4 |
| 1260.9 | 1268.4 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 1003 | 1008.7 | Metro School Chess Closed Individual Trials 2019 (U11 Girls) | 5 | 2019-03-02 | S | B | 1 | 0.76 | 0.24 | 4 | 0.76 | 0.24 | 4.8 |
| 1109.3 | 1125.1 | 20 | 20 | Afonso, IS (Isabella) | | WCT | 684.9 | 648.6 | 2018 WP Schools Closed Trials (U11 Girls) | 4 | 2018-03-10 | S | B | 1 | 0.95 | 0.05 | 0.8 | 0.99 | 0.01 | 0.2 |
