| 1367.2 | 1403.8 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1615.8 | 1626.2 | Western Cape HS Individuals 2023 (U19 Girls) | 3 | 2023-04-01 | S | W | 1 | 0.25 | 0.75 | 12.4 | 0.28 | 0.72 | 14.4 |
| 1337.3 | 1324.8 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1569.2 | 1571.4 | Cape Town Metro Schools Chess Closed Individuals 2023 (U19 Girls) | 2 | 2023-03-03 | S | W | 0 | 0.27 | -0.27 | -4.5 | 0.25 | -0.25 | -5 |
| 1326.5 | 1309.7 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1561 | 1562.4 | North District School Trials 2023 (U17+U19 Girls) | 4 | 2023-02-04 | S | B | 0 | 0.19 | -0.19 | -3.2 | 0.16 | -0.16 | -3.2 |
| 1389.5 | 1387 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1541.6 | 1542.3 | Stellenberg Chess Championship 2022 (Championship) | 1 | 2022-06-24 | S | B | 1 | 0.28 | 0.72 | 12.2 | 0.28 | 0.72 | 14.4 |
| 1377.1 | 1368.3 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1556.4 | 1557.7 | Western Cape Schools Chess 2022 (U18 Girls) | 5 | 2022-05-08 | S | B | 0 | 0.25 | -0.25 | -4.3 | 0.24 | -0.24 | -4.8 |
| 1374.2 | 1195.8 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1495.5 | 1255.7 | Western Cape Schools 2021 (U18 Girls) | 2 | 2021-10-23 | R | B | 0 | 0.32 | -0.32 | -4.2 | 0.39 | -0.39 | -7.8 |
| 1162.8 | 1163.2 | 20 | 20 | Joubert, N (Natasha) | WCM | WCT | 1205.8 | 1201.9 | District North Schools Chess Open Trials 2018 (U13) | 4 | 2018-02-10 | S | B | 0 | 0.41 | -0.41 | -6.8 | 0.41 | -0.41 | -8.2 |
| 1095 | 1095 | 20 | 20 | Joubert, N (Natasha) | WCM | WP | 1090 | 1090 | Wp Schools Chess Trials 2016 (U11 Girls) | 4 | 2016-03-05 | S | B | 0 | 0.51 | -0.51 | -8.5 | -0.51 | 0.51 | 10.2 |
| 1025 | 1025 | 20 | 20 | Joubert, N (Natasha) | WCM | WP | 996 | 996 | Western Cape Schools Chess Championships 2015 (U11 Girls) | 5 | 2015-05-17 | S | W | 0 | 0.54 | -0.54 | -9 | -0.54 | 0.54 | 10.8 |
| 1011 | 1011 | 20 | 20 | Joubert, N (Natasha) | WCM | WP | 988 | 988 | Sa Junior Closed Chess Championship 2015 (Under 10 Girls) | 10 | 2015-04-09 | S | W | 1 | 0.53 | 0.47 | 9.4 | 0.47 | 0.53 | 10.6 |
| 969 | 969 | 20 | 20 | Joubert, N (Natasha) | WCM | WP | 1028 | 1028 | Wp Schools Closed 2015 (U11 Girls) | 6 | 2015-03-07 | S | W | 0.5 | 0.42 | 0.08 | 1.3 | 0.08 | 0.42 | 8.4 |
| 898 | 898 | 20 | 20 | Joubert, N (Natasha) | | WP | 1129 | 1129 | Sa School Individual Chess Championship 2014 U9 Gi | 3 | 2014-07-11 | S | B | 0 | 0.21 | -0.21 | -3.9 | -0.21 | 0.21 | 4.2 |
| 0 | 0 | 20 | 20 | Joubert, N (Natasha) | | WP | 1007 | 1007 | Western Cape School Chess Tournament 2014 U 10 G | 4 | 2014-05-02 | S | B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 20 | 20 | Joubert, N (Natasha) | | WP | 1086 | 1086 | Wp Individual Championships (Under 10 Girls) | 1 | 2014-03-28 | S | W | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
