| 1483.2 | 1476.3 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1530.9 | 1524.6 | 2024 Tuks Open Chess Tournament (U12) | 5 | 2024-09-28 | S | B | 1 | 0.4 | 0.6 | 10 | 0.4 | 0.6 | 12 |
| 1336.1 | 1329.2 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1374.1 | 1362.1 | 2023 Elize Steenkamp Open Tournament (C) | 5 | 2023-06-17 | S | W | 1 | 0.5 | 0.5 | 9.4 | 0.5 | 0.5 | 10 |
| 1382.7 | 1379 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1413.8 | 1410.4 | Lardies Tournament 2022 (U10) | 1 | 2022-10-29 | S | B | 0 | 0.42 | -0.42 | -7 | 0.42 | -0.42 | -8.4 |
| 1180.8 | 1183.6 | 20 | 20 | Janse Van Rensburg, J (Josh) | | GTP | 1145.9 | 1142 | 2022 Menlo Open Tournament (E) | 3 | 2022-07-23 | S | W | 0 | 0.58 | -0.58 | -9.6 | 0.59 | -0.59 | -11.8 |
