| 1304.6 | 1287.2 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1554.3 | 1500.6 | Mangaung Metro Chess 10-11 May 2024 (A) | 5 | 2024-05-11 | S | W | 0 | 0.25 | -0.25 | -4.2 | 0.29 | -0.29 | -5.8 |
| 1285.8 | 1168.4 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1488.3 | 1375.4 | Bloemfontein High School League 16 February 2024 (U19A+U19B) | 5 | 2024-02-16 | R | B | 0 | 0.22 | -0.22 | -1.7 | 0.22 | -0.22 | -4.4 |
| 1274.2 | 1129.2 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1459.1 | 1300.2 | Kings & Queens Chess 27 January 2024 (A) | 1 | 2024-01-27 | R | B | 0 | 0.24 | -0.24 | -3 | 0.26 | -0.26 | -5.2 |
| 1308.6 | 1181.8 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1495 | 1329.4 | Bloemfontein HS League 13 October 2023 (U17+U19) | 4 | 2023-10-13 | R | W | 0 | 0.32 | -0.32 | -3 | 0.37 | -0.37 | -7.4 |
| 1308.6 | 1181.8 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1495 | 1329.4 | Heidedal Chess 14 October 2023 (A) | 4 | 2023-10-14 | R | W | 0 | 0.32 | -0.32 | -4 | 0.37 | -0.37 | -7.4 |
| 1283.4 | 736.6 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1419.7 | 881.4 | Mangaung Metro Chess 22 January 2022 (A) | 1 | 2022-01-22 | R | B | 0 | 0.3 | -0.3 | -3.8 | 0.29 | -0.29 | -5.8 |
| 1272.1 | 776.2 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1357.9 | 674.2 | Smart Chess Blitz 2020 (U14) | 3 | 2020-02-29 | B | W | 0 | 0.44 | -0.44 | -1.6 | 0.66 | -0.66 | -13.2 |
| 1156.9 | 1156.6 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 1200.2 | 1193 | Mangaung Metro Chess 15-16 March 2019 (C) | 3 | 2019-03-16 | S | W | 0 | 0.49 | -0.49 | -8.2 | 0.5 | -0.5 | -10 |
| 769.1 | 736.6 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 716.3 | 657.4 | Smart Chess Blitz 2018 (U12) | 5 | 2018-03-03 | B | B | 0 | 0.52 | -0.52 | -1.9 | 0.55 | -0.55 | -11 |
| 747 | 747 | 20 | 20 | Rossouw, J (Johrne) | | FMB | 595 | 595 | Free State Open 2017 (Beginners) | 3 | 2017-08-12 | S | B | 1 | 0.7 | 0.3 | 5.6 | 0.3 | 0.7 | 14 |
