| 1391.9 | 838.2 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1585.9 | 916.2 | 2022 South Africa Junior Blitz Chess Championships (U14) | 2 | 2022-12-05 | B | W | 0 | 0.32 | -0.32 | -1.2 | 0.45 | -0.45 | -9 |
| 1347.8 | 661 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1386.6 | 800.6 | Bojanala Fields Rapid-Blitz-Blindfold Champions 2022 (Rapid A) | 6 | 2022-05-28 | R | W | 1 | 0.5 | 0.5 | 3.9 | 0.38 | 0.62 | 12.4 |
| 1347.8 | 661 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1386.6 | 800.6 | Bojanala Fields Rapid-Blitz-Blindfold Champions 2022 (Blitz A) | 5 | 2022-05-28 | B | B | 0 | 0.41 | -0.41 | -1.5 | 0.3 | -0.3 | -6 |
| 1258.1 | 1253.3 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1346.7 | 1338.6 | Winter Games Chess Championships 2022 (U13 Open) | 4 | 2022-04-30 | S | B | 0 | 0.36 | -0.36 | -6 | 0.36 | -0.36 | -7.2 |
| 1208 | 1195.3 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1376.2 | 1372.4 | Bojanala SAJCC Trials - Session 1 of 3 2021 (C) | 5 | 2021-11-06 | S | B | 1 | 0.26 | 0.74 | 12.4 | 0.25 | 0.75 | 15 |
| 1213.7 | 1200.7 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1390.5 | 1390.1 | Spring at The King`s Gate 2021 (B) | 2 | 2021-09-11 | S | W | 1 | 0.34 | 0.66 | 11 | 0.32 | 0.68 | 13.6 |
| 1189.9 | 1182.8 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1352.7 | 1342.3 | Lebone II 2020 (U12) | 5 | 2020-02-15 | S | W | 0 | 0.35 | -0.35 | -5.8 | 0.36 | -0.36 | -7.2 |
| 1018.8 | 994.4 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 1154.2 | 1147.6 | Laerskool Proteapark 2019 (B) | 5 | 2019-05-18 | S | B | 0 | 0.3 | -0.3 | -5 | 0.28 | -0.28 | -5.6 |
| 661 | 661 | 20 | 20 | Byliefeldt, L (Leroux) | | NBR | 890.2 | 890.2 | Laerskool Vastrap 2018 (U10) | 2 | 2018-02-03 | S | B | 0 | 0.19 | -0.19 | -3.2 | 0.19 | -0.19 | -3.8 |
| 0 | 0 | 20 | 20 | Bylieveld, L (Leroux) | | NBR | 523 | 523 | Mountain Cambridge School Chess 2016 (U8) | 3 | 2016-09-10 | S | W | 0 | 0.49 | -0.49 | -8.1 | -0.49 | 0.49 | 9.8 |
