| 1560.8 | 1560.8 | 32 | 32 | Koutsouvelis, M (Matthew) | | ENM | 1749.6 | 1749.6 | NMBCU Trials 6 2026 (U14+U16) | 6 | 2026-05-23 | S | B | 0 | 0.24 | -0.24 | -6.3 | 0.24 | -0.24 | -7.6 |
| 1560.8 | 1560.8 | 32 | 32 | Koutsouvelis, M (Matthew) | | ENM | 1749.6 | 1749.6 | NMBCU Trials 5 2026 (U14) | 2 | 2026-05-16 | S | W | 0 | 0.32 | -0.32 | -8.6 | 0.32 | -0.32 | -10.3 |
| 1465.4 | 1465.4 | 32 | 32 | Koutsouvelis, M (Matthew) | | ENM | 1707.6 | 1707.6 | 2026 NMBCU Trials 4 (U14) | 6 | 2026-04-25 | S | W | 0 | 0.26 | -0.26 | -6.9 | 0.26 | -0.26 | -8.3 |
| 1454.7 | 1449.9 | 32 | 32 | Koutsouvelis, M (Matthew) | | ENM | 1663.9 | 1657.6 | 2026 NMBCU Trials 2 (U14) | 2 | 2026-03-07 | S | W | 0 | 0.3 | -0.3 | -7.9 | 0.3 | -0.3 | -9.6 |
| 1410 | 1400.5 | 20 | 20 | Koutsouvelis, M (Matthew) | | ENM | 1669.6 | 1660.7 | Pearson Chess Festival 2026 (C) | 2 | 2026-02-27 | S | W | 0 | 0.24 | -0.24 | -4 | 0.24 | -0.24 | -4.8 |
| 1174.3 | 1178.7 | 20 | 20 | Koutsouvelis, M (Matthew) | | ENM | 1292 | 1306.9 | NMBCU Closed 2024 (U12) | 1 | 2024-09-20 | S | B | 0 | 0.32 | -0.32 | -5.4 | 0.31 | -0.31 | -6.2 |
