| 1867.4 | 1852.3 | 20 | 20 | Manning, C (Callan) | JM | WCT | 1712.2 | 1694.2 | UCT Open Chess Championship 2025 (Championship) | 1 | 2025-10-10 | S | B | 0.5 | 0.64 | -0.14 | -2.6 | 0.64 | -0.14 | -2.8 |
| 1690 | 1693.8 | 20 | 20 | Manning, C (Callan) | JM | WCT | 1658.7 | 1639.1 | Western Cape Schools Individual Championship 2025 (U11 Boys) | 5 | 2025-05-18 | S | W | 0 | 0.58 | -0.58 | -9.6 | 0.61 | -0.61 | -12.2 |
| 1569.4 | 1480.6 | 20 | 20 | Manning, C (Callan) | | WCT | 1625.9 | 1524.9 | Curro Durbanville Chess Rapid Open 2024 (Championship) | 6 | 2024-07-13 | R | B | 0 | 0.39 | -0.39 | -5.1 | 0.41 | -0.41 | -8.2 |
| 1431.8 | 1421.1 | 20 | 20 | Manning, C (Callan) | | WCT | 1448.5 | 1420.8 | South African Junior Closed Chess Championship 2024 (U10 Open) | 9 | 2024-05-01 | S | W | 0.5 | 0.52 | -0.02 | -0.4 | 0.54 | -0.04 | -0.8 |
| 1465.2 | 1490.5 | 20 | 20 | Manning, C (Callan) | | WCT | 1481 | 1488.4 | Western Cape Closed Championship 2023 (U10) | 6 | 2023-09-23 | R | W | 1 | 0.52 | 0.48 | 5.2 | 0.54 | 0.46 | 9.2 |
| 1454.7 | 1384.5 | 20 | 20 | Manning, C (Callan) | | WCT | 1468.1 | 1440.3 | WP Closed 2023 (U10) | 4 | 2023-06-17 | S | W | 1 | 0.53 | 0.47 | 7.8 | 0.48 | 0.52 | 10.4 |
| 1378 | 1507.3 | 20 | 20 | Manning, C (Callan) | | WCT | 1470.3 | 1463.1 | Laerskool Welgemoed Rapid 2023 (U10) | 6 | 2023-02-11 | R | B | 0 | 0.35 | -0.35 | -3.8 | 0.51 | -0.51 | -10.2 |
| 1448.2 | 1395.4 | 20 | 20 | Manning, C (Callan) | | WCT | 1502 | 1534.7 | Kraaifontein Open 2022 (Intermediate) | 6 | 2022-12-18 | S | B | 0 | 0.4 | -0.4 | -7 | 0.3 | -0.3 | -6 |
| 1401.5 | 1269 | 20 | 20 | Manning, C (Callan) | | WCT | 1481.1 | 1376.9 | Curro Durbanville Chess Open Rapid 2022 (U8+U10) | 5 | 2022-07-02 | R | B | 0 | 0.37 | -0.37 | -4 | 0.33 | -0.33 | -6.6 |
| 1416.7 | 1365.5 | 20 | 20 | Manning, C (Callan) | | WCT | 1349.5 | 1304.8 | WP Closed 2022 (U8+U10) | 3 | 2022-06-16 | S | B | 0.5 | 0.54 | -0.04 | -0.7 | 0.53 | -0.03 | -0.6 |
| 1200 | 1200 | 20 | 20 | Manning, C (Callan) | | WCT | 1261.5 | 1241.6 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U8+U10) | 5 | 2022-02-19 | R | W | 0 | 0.47 | -0.47 | -5.6 | 0.49 | -0.49 | -9.8 |
