| 1482.8 | 1475.6 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1580.5 | 1571.5 | 2022 South African Junior Wild Card Chess Championships (U18+U20 Open) | 2 | 2022-12-09 | S | B | 0.5 | 0.34 | 0.16 | 3.2 | 0.35 | 0.15 | 3 |
| 1469.5 | 1086.4 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1537.3 | 1139.2 | BC Chess Trials 5 of 5 2022 (A) | 9 | 2022-06-11 | R | B | 0.5 | 0.38 | 0.12 | 0.8 | 0.4 | 0.1 | 2 |
| 1380.6 | 1380.8 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1368.5 | 1337.3 | 2019 Wild Card Chess Championship (U14 Open) | 6 | 2020-01-11 | S | B | 0 | 0.47 | -0.47 | -9.4 | 0.51 | -0.51 | -10.2 |
| 1341.8 | 1063.6 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1331.1 | 1076.4 | Vikings vs Hackers 2019 (B) | 5 | 2019-07-20 | R | W | 1 | 0.55 | 0.45 | 5.4 | 0.53 | 0.47 | 9.4 |
| 1297 | 1283.9 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1290.3 | 1247.8 | Buffalo City Trials 2 of 5 2019 (U14A) | 4 | 2019-02-23 | S | B | 0 | 0.47 | -0.47 | -7.8 | 0.5 | -0.5 | -10 |
| 1208.5 | 1064.4 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1177.9 | 1046.4 | Vikings Closed Sunday Rapid 2018 | 10 | 2018-12-09 | R | W | 1 | 0.58 | 0.42 | 3.9 | 0.56 | 0.44 | 8.8 |
| 1156.3 | 1141.7 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1225.1 | 1217.7 | Buffalo City Junior Closed Finals 2018 (B) | 1 | 2018-09-29 | S | B | 0 | 0.38 | -0.38 | -6.3 | 0.37 | -0.37 | -7.4 |
| 1032.9 | 1026 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1102.7 | 1109.2 | 4th Buffalo Trials 2018 (U14A) | 4 | 2018-05-05 | S | W | 0 | 0.46 | -0.46 | -7.6 | 0.44 | -0.44 | -8.8 |
| 1019.5 | 1060.4 | 20 | 20 | Chang, S (Sebastian) | | EBC | 1083.7 | 859.2 | 3rd Buffalo Trials 2018 (U14A) | 6 | 2018-04-14 | R | W | 0 | 0.47 | -0.47 | -5.6 | 0.78 | -0.78 | -15.6 |
| 804 | 804 | 20 | 20 | Chang, S (Sebastian) | | EBC | 855 | 855 | 2Nd Buffalo 2017 (League 3) | 4 | 2017-09-04 | S | B | 1 | 0.43 | 0.57 | 9.5 | 0.57 | 0.43 | 8.6 |
| 895 | 895 | 20 | 20 | Chang, S (Sebastian) | | EBC | 710 | 710 | 2017 4Th Buffalo City Trials (U12 A) | 5 | 2017-05-20 | S | B | 0 | 0.74 | -0.74 | -12.3 | -0.74 | 0.74 | 14.8 |
| 895 | 895 | 20 | 20 | Chang, S (Sebastian) | | EBC | 710 | 710 | 2017 3Rd Buffalo City Trials (U12 A) | 5 | 2017-05-20 | S | W | 0 | 0.74 | -0.74 | -12.3 | -0.74 | 0.74 | 14.8 |
| 868 | 868 | 20 | 20 | Chang, S (Sebastian) | | EBC | 648 | 648 | Ec Closed Inter Union 2016 (U12) | 3 | 2016-10-01 | S | W | 1 | 0.78 | 0.22 | 3.7 | 0.22 | 0.78 | 15.6 |
| 887 | 887 | 20 | 20 | Chang, S (Sebastian) | | EBC | 666 | 666 | 2Nd Buffalo City Chess Trials 2016 (U12) | 4 | 1900-01-01 | S | W | 1 | 0.78 | 0.22 | 3.7 | 0.22 | 0.78 | 15.6 |
| 0 | 0 | 20 | 20 | Chang, S (Sebastian) | | EBC | 858 | 858 | 1St Junior Trials - 28 February 2015 (U10) | 4 | 2015-02-28 | S | B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
