| 1346.9 | 1130.8 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1693.5 | 1530.8 | Paul Roos Blitz 2020 | 5 | 2020-02-22 | B | B | 0 | 0.05 | -0.05 | -0.2 | 0 | 0 | 0 |
| 1284.3 | 1198.8 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1700.9 | 1724.6 | Western Cape Top Schools 2019 (U15 Mix) | 4 | 2019-09-01 | S | W | 0 | 0.06 | -0.06 | -1 | 0.01 | -0.01 | -0.2 |
| 1120.4 | 1156.8 | 20 | 20 | Van Der Merwe, A (Alexander) | | WCT | 1543.6 | 1522.5 | Rhenish Primary Chess Tournament 2018 (U14) | 6 | 2018-05-12 | R | B | 0 | 0 | 0 | 0 | 0.03 | -0.03 | -0.6 |
| 1066 | 1066 | 20 | 20 | Van Der Merwe, A (Alexander) | | WP | 1317 | 1317 | Western Cape Schools Chess Individuals 2016 (U11B) | 4 | 2016-05-21 | S | W | 0 | 0.19 | -0.19 | -3.2 | -0.19 | 0.19 | 3.8 |
| 855 | 855 | 20 | 20 | Van Der Merwe, A (Alexander) | | WP | 1259 | 1259 | Cape Winelands 2016 (U11 Boys) | 5 | 2016-04-10 | S | B | 0 | 0.08 | -0.08 | -1.3 | -0.08 | 0.08 | 1.6 |
| 985 | 985 | 20 | 20 | Van Der Merwe, A (Alexander) | | WB | 800 | 800 | Rhenish Primary School 2014 Chess Tournament U 10 | 4 | 2014-06-07 | R | W | 0 | 0.3 | -0.3 | -3.6 | -0.3 | 0.3 | 6 |
