| 1152.1 | 1141.7 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1206.9 | 1193 | 2024 Gauteng Inter-Region Chess Championship (U10B) | 5 | 2024-01-14 | S | W | 0 | 0.48 | -0.48 | -9 | 0.48 | -0.48 | -9.6 |
| 1208.6 | 1205.8 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1281.1 | 1272.6 | Wynie Robbertse Open Tournament 2023 (D) | 2 | 2023-06-03 | S | W | 0 | 0.46 | -0.46 | -7.6 | 0.46 | -0.46 | -9.2 |
| 1115.9 | 1120 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1252.1 | 1249.2 | Tuks Junior Developmental Chess Tournament 2023 (Yellow) | 5 | 2023-03-18 | S | W | 0 | 0.38 | -0.38 | -6.3 | 0.39 | -0.39 | -7.8 |
| 1166.6 | 1171.6 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1266.9 | 1274.1 | 2022 Etienne Lewis (U10 Open) | 7 | 2022-09-04 | S | B | 0 | 0.34 | -0.34 | -6.4 | 0.34 | -0.34 | -6.8 |
| 1169.1 | 1163.6 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1251.5 | 1258.1 | 2021 Alekhine Open (F) | 2 | 2021-08-14 | S | B | 0 | 0.36 | -0.36 | -6.8 | 0.35 | -0.35 | -7 |
| 1200 | 1200 | 20 | 20 | Erwee, HP (Hermanus Philipus) | | GTP | 1281.7 | 1298.4 | 2021 Chris Greyling Open Tournament (F) | 2 | 2021-05-08 | S | W | 0 | 0.45 | -0.45 | -7.5 | 0.43 | -0.43 | -8.6 |
