| 1085.1 | 1073.7 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 1210.4 | 1182.3 | NWU Vaal Open 2023 (LSEN) | 4 | 2023-10-14 | S | B | 1 | 0.31 | 0.69 | 11.5 | 0.33 | 0.67 | 13.4 |
| 1129.3 | 1128.9 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 1203.8 | 1165.5 | Fonteine Chess Open 2023 (LSEN) | 3 | 2023-09-02 | S | B | 0 | 0.37 | -0.37 | -6.1 | 0.42 | -0.42 | -8.4 |
| 1058.5 | 1051.2 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 1150.9 | 1147.2 | Valia's Chess Tournament 2023 (LSEN) | 4 | 2023-05-06 | S | B | 0 | 0.35 | -0.35 | -5.8 | 0.35 | -0.35 | -7 |
| 976.8 | 943.2 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 1073.2 | 1061.4 | Hoerskool Drie Riviere Open 2023 (F) | 2 | 2023-03-11 | S | B | 0 | 0.35 | -0.35 | -5.8 | 0.32 | -0.32 | -6.4 |
| 1120 | 1103.6 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 806.8 | 857.6 | Dirk De Koster Chess Open 2022 (LSEN) | 2 | 2022-04-23 | S | B | 0 | 0.82 | -0.82 | -13.6 | 0.74 | -0.74 | -14.8 |
| 1200 | 1200 | 20 | 20 | Van Der Merwe, P (Phillip) | | GSV | 777.9 | 830.4 | Drie Riviere Open 2022 (LSEN) | 5 | 2022-03-18 | S | W | 0 | 1 | -1 | -16.6 | 0.97 | -0.97 | -19.4 |
