| 1385.5 | 1382.9 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1448.5 | 1459.4 | 2025 KCC - 11th Annual Christmas Open (Rooks) | 4 | 2025-12-06 | S | W | 0 | 0.47 | -0.47 | -7.9 | 0.45 | -0.45 | -9 |
| 1396.7 | 1391.7 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1446.2 | 1454.5 | 2025 Frances Baard Closed Chess Championship (U14) | 4 | 2025-04-12 | S | W | 0 | 0.48 | -0.48 | -8.1 | 0.47 | -0.47 | -9.4 |
| 1425.3 | 1421.1 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1389.7 | 1375.9 | Kimberley Chess Club Open 2023 (U10-U14) | 3 | 2023-12-09 | S | W | 0 | 0.58 | -0.58 | -9.7 | 0.59 | -0.59 | -11.8 |
| 1423.4 | 1421.5 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1466.4 | 1461.3 | KCC School Holiday Tournament 2023 (U12) | 4 | 2023-04-04 | S | B | 1 | 0.41 | 0.59 | 9.9 | 0.41 | 0.59 | 11.8 |
| 1223.7 | 1244.9 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1412.7 | 1411.8 | FB Open Development Tournament 2022 (A) | 2 | 2022-09-17 | S | B | 0 | 0.24 | -0.24 | -4 | 0.26 | -0.26 | -5.2 |
| 1158.5 | 1158.9 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1176.9 | 1176.6 | Kimberley Chess Club Development Tournament 2022 (B) | 4 | 2022-08-20 | S | B | 0 | 0.44 | -0.44 | -7.4 | 0.44 | -0.44 | -8.8 |
| 1112.4 | 1119.3 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1123.1 | 1110 | Kimberley Chess Club Open Tournament (C) | 2 | 2022-03-05 | S | B | 0 | 0.45 | -0.45 | -7.6 | 0.47 | -0.47 | -9.4 |
| 1094.6 | 1099.7 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1184.2 | 1182 | Womens Open Tournament 2022 (C) | 5 | 2022-02-19 | S | B | 1 | 0.35 | 0.65 | 10.9 | 0.36 | 0.64 | 12.8 |
| 1128.7 | 1133.3 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1171.2 | 1168.7 | Sol Plaatje Juniors I 2021 | 4 | 2021-02-06 | S | W | 0 | 0.49 | -0.49 | -8.1 | 0.5 | -0.5 | -10 |
| 1168.3 | 1160.9 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1148.3 | 1122.3 | NC Open Schools 2020 (U7+U9 Open + U9 Girls) | 5 | 2020-02-29 | S | B | 0 | 0.48 | -0.48 | -8 | 0.5 | -0.5 | -10 |
| 1078 | 1052.4 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1084.4 | 1066.8 | Frances Baard Schools Trials 2019 (U7+U9 Boys+Girls) | 3 | 2019-03-02 | S | B | 0 | 0.45 | -0.45 | -7.5 | 0.44 | -0.44 | -8.8 |
| 1124.1 | 1105.2 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1094.6 | 1077.2 | Frances Baard Schools Open Tournament 2019 (U7+U9 Boys+Girls) | 4 | 2019-01-29 | S | B | 0 | 0.49 | -0.49 | -8.1 | 0.49 | -0.49 | -9.8 |
| 1137.6 | 1122.8 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1202.3 | 1199.2 | Northern Cape Closed Chess Championships 2018 (U8 Open) | 5 | 2018-09-01 | S | W | 0 | 0.47 | -0.47 | -8.8 | 0.45 | -0.45 | -9 |
| 1200 | 1200 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1200 | 1200 | Russian Connecxion Chess Club: The Ultimate Reign of Terror 2018 (D) | 2 | 2018-08-04 | S | B | 0 | 0.46 | -0.46 | -7.6 | 0.46 | -0.46 | -9.2 |
| 1200 | 1200 | 20 | 20 | Matthys, A (Ayden) | | NCF | 1200 | 1200 | Frances Baard Schools Open (U7) | 2 | 2018-08-18 | S | B | 0 | 0.46 | -0.46 | -7.6 | 0.46 | -0.46 | -9.2 |
