| 1472.3 | 1466.1 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1444.8 | 1452.6 | Spartan Bishops Championships Warriors 2025 (U16) | 4 | 2025-05-24 | S | W | 0.5 | 0.57 | -0.07 | -1.2 | 0.56 | -0.06 | -1.2 |
| 1427.2 | 1410.1 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1446.2 | 1454.5 | 2025 Frances Baard Closed Chess Championship (U14) | 5 | 2025-04-12 | S | B | 1 | 0.44 | 0.56 | 9.4 | 0.41 | 0.59 | 11.8 |
| 1388 | 1365.7 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1449.3 | 1467.9 | 2024 NC Closed Chess Championships (U14 Open) | 4 | 2024-08-24 | S | W | 0.5 | 0.47 | 0.03 | 0.6 | 0.42 | 0.08 | 1.6 |
| 1531.6 | 1522.8 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1435.5 | 1425.5 | Kimberley Chess Club School Holiday Tournament 2023 (U14) | 5 | 2023-06-29 | S | B | 1 | 0.57 | 0.43 | 7.2 | 0.57 | 0.43 | 8.6 |
| 1525 | 1532.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1466.4 | 1461.3 | KCC School Holiday Tournament 2023 (U12) | 2 | 2023-04-03 | S | W | 1 | 0.61 | 0.39 | 6.6 | 0.62 | 0.38 | 7.6 |
| 1467.4 | 1468.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1176.9 | 1176.6 | Kimberley Chess Club Development Tournament 2022 (B) | 2 | 2022-08-20 | S | B | 0 | 0.8 | -0.8 | -13.4 | 0.8 | -0.8 | -16 |
| 1467.4 | 1468.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1176.9 | 1176.6 | Diamond Chess Academy Junior Championships 2022 (U12) | 4 | 2022-08-06 | S | B | 1 | 0.8 | 0.2 | 3.4 | 0.8 | 0.2 | 4 |
| 1446.4 | 1443.9 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1123.1 | 1110 | Kimberley Chess Club Open Tournament (C) | 1 | 2022-03-05 | S | W | 1 | 0.92 | 0.08 | 1.3 | 0.93 | 0.07 | 1.4 |
| 1346.9 | 1345.6 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1184.2 | 1182 | Womens Open Tournament 2022 (C) | 4 | 2022-02-19 | S | W | 1 | 0.73 | 0.27 | 4.5 | 0.73 | 0.27 | 5.4 |
| 1285.6 | 1279.7 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1180.9 | 1179.1 | Kimberley Chess Club Open 2022 (C) | 1 | 2022-01-21 | S | W | 1 | 0.66 | 0.34 | 5.7 | 0.66 | 0.34 | 6.8 |
| 1253.2 | 1239.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1173.3 | 1170.1 | NC Open 2021 (D) | 3 | 2021-10-23 | S | B | 1 | 0.55 | 0.45 | 7.6 | 0.54 | 0.46 | 9.2 |
| 1236.3 | 1210.6 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1171.2 | 1168.7 | Sol Plaatje Juniors I 2021 | 5 | 2021-02-06 | S | B | 0 | 0.53 | -0.53 | -8.8 | 0.51 | -0.51 | -10.2 |
| 1271.8 | 1261 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1148.3 | 1122.3 | NC Open Schools 2020 (U7+U9 Open + U9 Girls) | 4 | 2020-02-29 | S | W | 0 | 0.69 | -0.69 | -11.5 | 0.7 | -0.7 | -14 |
| 1125.6 | 1108.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1223.7 | 1216.7 | Kimberley Chess Club Schools` Open 2019 (U7+U9 Open) | 4 | 2019-07-20 | S | B | 1 | 0.34 | 0.66 | 11 | 0.33 | 0.67 | 13.4 |
| 1170 | 1165.2 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1084.4 | 1066.8 | Frances Baard Schools Trials 2019 (U7+U9 Boys+Girls) | 4 | 2019-03-02 | S | W | 0 | 0.64 | -0.64 | -10.6 | 0.66 | -0.66 | -13.2 |
| 1149.4 | 1139.6 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1094.6 | 1077.2 | Frances Baard Schools Open Tournament 2019 (U7+U9 Boys+Girls) | 2 | 2019-01-29 | S | W | 1 | 0.61 | 0.39 | 6.5 | 0.61 | 0.39 | 7.8 |
| 1171.1 | 1162.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1202.3 | 1199.2 | Northern Cape Closed Chess Championships 2018 (U8 Open) | 3 | 2018-09-01 | S | W | 1 | 0.51 | 0.49 | 9.2 | 0.5 | 0.5 | 10 |
| 1200 | 1200 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1200 | 1200 | Russian Connecxion Chess Club: The Ultimate Reign of Terror 2018 (D) | 1 | 2018-08-04 | S | W | 1 | 0.54 | 0.46 | 7.6 | 0.54 | 0.46 | 9.2 |
