| 1535.7 | 1521.3 | 32 | 32 | Mendonca, M (Mark) | JM | GE | 1717.2 | 1718.3 | Ekurhuleni North District Individuals 2026 (U9 Boys) | 5 | 2026-05-09 | S | B | 0 | 0.25 | -0.25 | -6.6 | 0.23 | -0.23 | -7.3 |
| 1523 | 1355.2 | 32 | 36 | Mendonca, M (Mark) | | GE | 1693.9 | 1311.8 | East Rand Chess Club Open 2026 (E) | 3 | 2026-03-14 | R | B | 0 | 0.26 | -0.26 | -5 | 0.51 | -0.51 | -18.3 |
| 1495.3 | 1508.6 | 20 | 20 | Mendonca, M (Mark) | | GE | 1632.6 | 1632.8 | Ekurhuleni 1st Standard Tournament 2026 (E) | 5 | 2026-02-14 | S | B | 0 | 0.3 | -0.3 | -5 | 0.31 | -0.31 | -6.2 |
| 1495.3 | 1508.6 | 20 | 20 | Mendonca, M (Mark) | | GE | 1632.6 | 1632.8 | JP Wagner Cup 2026 (U8+U10) | 4 | 2026-01-31 | S | B | 0 | 0.3 | -0.3 | -5 | 0.31 | -0.31 | -6.2 |
| 1340.6 | 1343.2 | 20 | 20 | Mendonca, M (Mark) | | GE | 1590 | 1590.6 | East Rand Chess Club Open 2025 (D) | 5 | 2025-08-09 | S | W | 0 | 0.25 | -0.25 | -4.1 | 0.25 | -0.25 | -5 |
| 1340.6 | 1343.2 | 20 | 20 | Mendonca, M (Mark) | | GE | 1590 | 1590.6 | East Rand Chess Club Open 2025 (D) | 5 | 2025-08-09 | S | W | 0 | 0.25 | -0.25 | -4.1 | 0.25 | -0.25 | -5 |
| 1340.6 | 1200 | 20 | 20 | Mendonca, M (Mark) | | GE | 1590 | 1254.9 | East Rand Chess Club 2025 (D) | 1 | 2025-09-06 | R | W | 1 | 0.25 | 0.75 | 9 | 0.48 | 0.52 | 10.4 |
| 1340.6 | 1200 | 20 | 20 | Mendonca, M (Mark) | | GE | 1590 | 1254.9 | East Rand Chess Club 2025 (D) | 1 | 2025-09-06 | R | W | 1 | 0.25 | 0.75 | 9 | 0.48 | 0.52 | 10.4 |
| 1191.5 | 1189.7 | 20 | 20 | Mendonca, M (Mark) | | GE | 1501 | 1500.3 | Chess Power House March Open 2025 (E) | 1 | 2025-03-22 | S | W | 0 | 0.18 | -0.18 | -3 | 0.18 | -0.18 | -3.6 |
| 1200 | 1200 | 20 | 20 | Mendonca, M (Mark) | | GE | 1331.5 | 1322.1 | Ekurhuleni/Springs Open 025 (U8+U10) | 2 | 2025-02-22 | S | W | 0 | 0.39 | -0.39 | -6.5 | 0.4 | -0.4 | -8 |
