| 1001.4 | 997.2 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1231.8 | 1220.3 | 2019 South African Junior LSEN Championships (U15A SID) | 4 | 2020-01-12 | S | W | 0 | 0.27 | -0.27 | -5.1 | 0.28 | -0.28 | -5.6 |
| 1001.1 | 997.7 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1267.4 | 1264.6 | Eureka LSEN Skaak/Chess 2019 (A) | 3 | 2019-10-09 | S | W | 0 | 0.23 | -0.23 | -3.8 | 0.23 | -0.23 | -4.6 |
| 951.3 | 949.2 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1231.5 | 1225.4 | LS Voorwaarts & Dr P Hangelbroek Chess Open 2019 (LSEN) | 4 | 2019-08-31 | S | B | 0 | 0.13 | -0.13 | -2.2 | 0.14 | -0.14 | -2.8 |
| 848.2 | 839.2 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1245.6 | 1238 | Drie Riviere Open 2019 (E) | 1 | 2019-06-08 | S | B | 1 | 0 | 1 | 16.6 | 0 | 1 | 20 |
| 574.7 | 565.8 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 983.4 | 971 | South African LSEN Championships 2018 (U16 SID) | 4 | 2018-12-23 | S | B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 904.3 | 929 | TST-MSA Tournament 2018 | 5 | 2018-07-21 | S | B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 510.3 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 777.8 | 808.2 | Hoerskool Drie Riviere Open 2018 (LSEN) | 4 | 2018-06-09 | S | W | 0 | 0.23 | -0.23 | -3.8 | 0.18 | -0.18 | -3.6 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 773.5 | 613.8 | SWVG Arnold Classic Rapid & Blitz 2018 (U16 SID) | 2 | 2018-05-18 | R | W | 0 | 0.22 | -0.22 | -3.1 | 0.41 | -0.41 | -8.2 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 539 | 539 | Laer Volkskool Open Tournament 2017 (G - Lsen) | 4 | 2017-08-19 | S | W | 0 | 0.45 | -0.45 | -7.5 | -0.45 | 0.45 | 9 |
| 520 | 520 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 593 | 593 | D7 Primary 2017 (Open) | 3 | 2017-04-22 | S | B | 0 | 0.4 | -0.4 | -6.6 | -0.4 | 0.4 | 8 |
