| 1156.6 | 1156.9 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1267.4 | 1264.6 | Eureka LSEN Skaak/Chess 2019 (A) | 5 | 2019-10-09 | S | W | 0 | 0.41 | -0.41 | -6.8 | 0.42 | -0.42 | -8.4 |
| 1031.5 | 1022.7 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1231.5 | 1225.4 | LS Voorwaarts & Dr P Hangelbroek Chess Open 2019 (LSEN) | 2 | 2019-08-31 | S | W | 1 | 0.31 | 0.69 | 11.5 | 0.31 | 0.69 | 13.8 |
| 1051.4 | 1046.7 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1213.3 | 1200.2 | TST-MSA Chess Open 2019 (LSEN) | 5 | 2019-07-20 | S | B | 0 | 0.27 | -0.27 | -4.5 | 0.28 | -0.28 | -5.6 |
| 978.4 | 969.7 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1247.7 | 1239.5 | Dirk de Koster Chess Open 2019 (LESN) | 4 | 2019-04-13 | S | B | 0 | 0.14 | -0.14 | -2.3 | 0.14 | -0.14 | -2.8 |
| 1005.3 | 1003.3 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1267.7 | 1264.7 | Carels Open 2019 (B) | 1 | 2019-03-02 | S | W | 0 | 0.24 | -0.24 | -4 | 0.24 | -0.24 | -4.8 |
| 906.2 | 902.5 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 1242.5 | 1236.8 | 2019 Heidelberg Open (E) | 3 | 2019-02-02 | S | B | 0 | 0.07 | -0.07 | -1.4 | 0.07 | -0.07 | -1.4 |
| 684.7 | 662.9 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 904.3 | 929 | TST-MSA Tournament 2018 | 3 | 2018-07-21 | S | B | 0 | 0.2 | -0.2 | -3.3 | 0.15 | -0.15 | -3 |
| 678.4 | 643.6 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 777.8 | 808.2 | Hoerskool Drie Riviere Open 2018 (LSEN) | 2 | 2018-06-09 | S | W | 0 | 0.43 | -0.43 | -7.1 | 0.35 | -0.35 | -7 |
| 601.9 | 570 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 773.5 | 613.8 | SWVG Arnold Classic Rapid & Blitz 2018 (U16 SID) | 3 | 2018-05-18 | R | B | 1 | 0.26 | 0.74 | 10.4 | 0.41 | 0.59 | 11.8 |
| 570 | 570 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 613.8 | 613.8 | South African Junior Chess Championships 2017 (LSEN U16B) | 4 | 2018-01-10 | S | B | 0 | 0.41 | -0.41 | -6.8 | 0.41 | -0.41 | -8.2 |
| 512 | 512 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 543 | 543 | Fonteine Ope 2017 (E-Lsen) | 5 | 2017-10-14 | S | B | 0 | 0.46 | -0.46 | -7.6 | -0.46 | 0.46 | 9.2 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 539 | 539 | Laer Volkskool Open Tournament 2017 (G - Lsen) | 1 | 2017-08-19 | S | B | 1 | 0.45 | 0.55 | 9.1 | 0.55 | 0.45 | 9 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 500 | 500 | Laerskool Ag Visser 2017 (Lsen) | 2 | 2017-03-11 | S | B | 0 | 0.5 | -0.5 | -8.3 | -0.5 | 0.5 | 10 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 500 | 500 | Carels Open Chess Tournament 2017 (E-Lsen) | 5 | 2017-03-04 | S | W | 0 | 0.5 | -0.5 | -8.3 | -0.5 | 0.5 | 10 |
| 500 | 500 | 20 | 20 | Diedericks, C (Christiaan) | | GSV | 500 | 500 | Heidelberg Chess Club Open Tournament 2017 (E - Lsen) | 2 | 2017-02-25 | S | W | 0 | 0.5 | -0.5 | -8.3 | -0.5 | 0.5 | 10 |
