| 1561.4 | 1549.4 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1368.7 | 1397.3 | 2018 Etienne Lewis Trials (U16 Boys) | 3 | 2018-09-01 | S | W | 0.5 | 0.77 | -0.27 | -5.4 | 0.72 | -0.22 | -4.4 |
| 1669.4 | 1668.9 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1329 | 1330.7 | 2018 Gauteng Secondary Schools Individual Chess Championships (U15 Boys) | 3 | 2018-05-26 | S | W | 0.5 | 0.94 | -0.44 | -7.3 | 0.94 | -0.44 | -8.8 |
| 1729.7 | 1736.7 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1286.6 | 1290 | 2018 South African Junior Closed Chess Championships (U14 Open) | 11 | 2018-04-07 | S | B | 1 | 0.97 | 0.03 | 0.6 | 0.98 | 0.02 | 0.4 |
| 1395 | 1395 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1107 | 1107 | 2016 Tshwane Chess Etienne Lewis Trials (U14 Boys) | 7 | 2016-09-04 | S | W | 0 | 0.84 | -0.84 | -16.8 | -0.84 | 0.84 | 16.8 |
| 1377 | 1377 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1137 | 1137 | D3 Individual School Trails 2016 (U13 Boys) | 5 | 2016-04-16 | S | W | 1 | 0.8 | 0.2 | 3.3 | 0.2 | 0.8 | 16 |
| 1380 | 1380 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1110 | 1110 | D3 Cluster 5 Individual Trails 2016 (U13 Boys) | 5 | 2016-04-16 | S | W | 0.5 | 0.83 | -0.33 | -5.5 | -0.33 | 0.83 | 16.6 |
| 1328 | 1328 | 20 | 20 | Koning, J (Jaedin) | | GTP | 1036 | 1036 | D3 Individual Trails 2015 (U11 Boys) | 5 | 2015-05-16 | S | W | 1 | 0.85 | 0.15 | 2.5 | 0.15 | 0.85 | 17 |
| 1204 | 1204 | 20 | 20 | Koning, J (Jaedin) | | GTP | 960 | 960 | Etienne Lewis Under 12 Section G Born In ’04 03 | 2 | 2014-08-08 | S | W | 1 | 0.8 | 0.2 | 3.8 | 0.2 | 0.8 | 16 |
| 1162 | 1162 | 20 | 20 | Koning, J (Jaedin) | | GTP | 966 | 966 | Menlo Open 2014 - Sec B Rating | 1 | 2014-07-26 | S | W | 1 | 0.75 | 0.25 | 4.1 | 0.25 | 0.75 | 15 |
| 1237 | 1237 | 20 | 20 | Koning, J (Jaedin) | | GTP | 938 | 938 | Mid-Gauteng Open 2014 - Sec B Ranting < 1500 | 3 | 2014-06-14 | S | W | 0 | 0.85 | -0.85 | -14.1 | -0.85 | 0.85 | 17 |
| 1271 | 1271 | 20 | 20 | Koning, J (Jaedin) | | GTP | 865 | 865 | D3 Schools Individuals U11 Open | 4 | 2014-05-31 | S | W | 1 | 0.92 | 0.08 | 1.3 | 0.08 | 0.92 | 18.4 |
