| 1786.5 | 1788.1 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1836.9 | 1854.3 | 2022 Western Province Club League (Premier) | 8 | 2022-09-10 | S | W | 0 | 0.48 | -0.48 | -9.6 | 0.46 | -0.46 | -9.2 |
| 1798.1 | 1821.8 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1843.7 | 1870.6 | Western Cape Inter Region Cup 2021 (Senior) | 3 | 2022-03-05 | S | W | 0.5 | 0.49 | 0.01 | 0.2 | 0.48 | 0.02 | 0.4 |
| 1673.3 | 1679.5 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1735.1 | 1739.6 | Western Cape Closed 2021 (Championship) | 3 | 2021-09-25 | S | W | 0 | 0.47 | -0.47 | -9.4 | 0.47 | -0.47 | -9.4 |
| 1607.3 | 1604.2 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1684.4 | 1683 | Paul Roos Gymnasium Covid-19 Challenge 2021 (A) | 4 | 2021-02-28 | S | B | 1 | 0.37 | 0.63 | 10.7 | 0.37 | 0.63 | 12.6 |
| 1717.3 | 1731.6 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1621.8 | 1646.1 | 2019 South African Closed Chess Championships (Open B) | 3 | 2019-12-09 | S | B | 0.5 | 0.57 | -0.07 | -1.4 | 0.56 | -0.06 | -1.2 |
| 1354 | 1354 | 20 | 20 | Van Der Merwe, A (Alexander) | | WP | 1441 | 1441 | 2017 Western Province League (Premier) | 5 | 2017-08-12 | S | W | 0 | 0.38 | -0.38 | -7.6 | -0.38 | 0.38 | 7.6 |
