| 1585.1 | 1562.3 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1684.1 | 1695 | South African Junior Closed Chess Championships 2025 (U16 Open) | 5 | 2025-04-03 | S | B | 0.5 | 0.34 | 0.16 | 3.2 | 0.3 | 0.2 | 4 |
| 1572.7 | 1547 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1683.5 | 1693.9 | CT Metro Schools Individual Closed 2025 (U17 Open) | 6 | 2025-03-02 | S | W | 0.5 | 0.41 | 0.09 | 1.5 | 0.37 | 0.13 | 2.6 |
| 1575.5 | 1507.3 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1738.1 | 1756 | CT League 2024 (C) | 2 | 2024-07-20 | S | B | 0.5 | 0.27 | 0.23 | 4.6 | 0.17 | 0.33 | 6.6 |
| 1481.5 | 1435.3 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1654.4 | 1681.3 | Western Cape HS Individuals Championship 2024 (U15 Boys) | 2 | 2024-03-21 | S | B | 0 | 0.26 | -0.26 | -4.3 | 0.17 | -0.17 | -3.4 |
| 1481.5 | 1435.3 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1654.4 | 1681.3 | Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Boys) | 4 | 2024-03-03 | S | B | 0 | 0.26 | -0.26 | -4.3 | 0.17 | -0.17 | -3.4 |
| 1459.5 | 1507.7 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1667.1 | 1546.2 | Chess Challengers Championship – High School 2023 (U15) | 6 | 2023-10-14 | R | W | 1 | 0.3 | 0.7 | 8.4 | 0.5 | 0.5 | 10 |
| 1550.7 | 1553.5 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1644 | 1382.7 | Cape Town Junior Chess League - Round 1 2023 (U16A) | 2 | 2023-07-22 | R | B | 1 | 0.35 | 0.65 | 7 | 0.66 | 0.34 | 6.8 |
| 1505.3 | 1472.9 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1610.9 | 1565.2 | Western Cape Closed Championship 2022 (U14) | 3 | 2022-09-24 | S | W | 1 | 0.42 | 0.58 | 9.6 | 0.43 | 0.57 | 11.4 |
| 1406.1 | 1304.8 | 20 | 20 | Degueldre, J (Jean-Christian) | | WCT | 1362.5 | 1307.1 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U14) | 5 | 2022-02-19 | R | B | 0 | 0.51 | -0.51 | -6.1 | 0.46 | -0.46 | -9.2 |
