| 1582.9 | 1586.8 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1590.4 | 1594.5 | Bojanala Closed Chess Championships 2026 (U16) | 3 | 2026-02-14 | S | W | 0 | 0.53 | -0.53 | -10.6 | 0.53 | -0.53 | -10.6 |
| 1250.4 | 1259.6 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1396.8 | 1401.5 | Bojanala Silwerrand's Rating Implosion 2024 (Rooks) | 5 | 2024-03-16 | S | W | 1 | 0.37 | 0.63 | 10.5 | 0.38 | 0.62 | 12.4 |
| 1403.4 | 1418.5 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1351.5 | 1350.6 | Bojanala Closed Chess Championships Finals 2024 (U14) | 5 | 2024-02-11 | S | W | 0.5 | 0.6 | -0.1 | -2 | 0.62 | -0.12 | -2.4 |
| 1373.1 | 1384.6 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1292 | 1291.2 | Bojanala Closed Chess Championships Stage 1 2024 (U14) | 5 | 2024-01-27 | S | W | 1 | 0.64 | 0.36 | 6 | 0.65 | 0.35 | 7 |
| 1360.7 | 1355.2 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1477 | 1476.4 | Harties Wolf Pack 2023 (Rooks) | 3 | 2023-01-21 | S | W | 1 | 0.41 | 0.59 | 9.9 | 0.4 | 0.6 | 12 |
| 1109.1 | 1090.4 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1298.7 | 1299.3 | Lebone II - Day of The Blue Army 2022 (C) | 1 | 2022-09-03 | S | B | 0.5 | 0.24 | 0.26 | 4.4 | 0.22 | 0.28 | 5.6 |
| 1109.1 | 1090.4 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1298.7 | 1299.3 | Bojanala SAJCC Trials 2022 (U12) | 1 | 2022-09-23 | S | B | 0 | 0.24 | -0.24 | -4.8 | 0.22 | -0.22 | -4.4 |
| 1100 | 1074 | 20 | 20 | Botha, J (Johannes Cornelis) | | NBR | 1214.4 | 1215.2 | Lebone II 2022 (D) | 1 | 2022-02-12 | S | B | 0.5 | 0.33 | 0.17 | 2.9 | 0.29 | 0.21 | 4.2 |
