| 1560.4 | 1556.5 | 20 | 20 | Williams, I (Igor) | | WEG | 1402.7 | 1401 | George Chess Trials 3 2023 (U17 Boys) | 2 | 2023-02-25 | S | B | 1 | 0.64 | 0.36 | 6 | 0.64 | 0.36 | 7.2 |
| 1560.4 | 1556.5 | 20 | 20 | Williams, I (Igor) | | WEG | 1402.7 | 1401 | George Chess Trials 2 2023 (U17 Boys) | 5 | 2023-02-11 | S | W | 1 | 0.73 | 0.27 | 4.5 | 0.72 | 0.28 | 5.6 |
| 1554.6 | 1546.9 | 20 | 20 | Williams, I (Igor) | | WEG | 1409.1 | 1410.9 | George Chess Trials 1 2023 (U17 Boys) | 2 | 2023-01-28 | S | B | 1 | 0.63 | 0.37 | 6.1 | 0.62 | 0.38 | 7.6 |
| 1519.6 | 1540.5 | 20 | 20 | Williams, I (Igor) | | WEG | 1368.8 | 1413.1 | Eden Proewe 1 2022 (O15 Seuns) | 4 | 2022-03-12 | S | B | 1 | 0.63 | 0.37 | 6.3 | 0.61 | 0.39 | 7.8 |
| 1521.2 | 1538.9 | 20 | 20 | Williams, I (Igor) | | WEG | 1352.1 | 1398.7 | George Trials 3 2022 (U15) | 5 | 2022-02-26 | S | W | 0.5 | 0.74 | -0.24 | -4 | 0.7 | -0.2 | -4 |
| 1521.2 | 1538.9 | 20 | 20 | Williams, I (Igor) | | WEG | 1352.1 | 1398.7 | George Trials 2 2022 (U15) | 2 | 2022-02-12 | S | W | 1 | 0.74 | 0.26 | 4.3 | 0.7 | 0.3 | 6 |
| 1476.2 | 1537.6 | 20 | 20 | Williams, I (Igor) | | WEG | 1311 | 1326.9 | Eden Schools Closed Trials 1 2020 (U13 Boys) | 3 | 2020-03-07 | S | B | 1 | 0.65 | 0.35 | 6 | 0.7 | 0.3 | 6 |
| 1410.5 | 1403.7 | 20 | 20 | Williams, I (Igor) | | WEG | 1235.3 | 1249.5 | George Trial 3 2020 (U14) | 5 | 2020-02-22 | S | W | 1 | 0.75 | 0.25 | 4.3 | 0.72 | 0.28 | 5.6 |
| 1379.5 | 1365.9 | 20 | 20 | Williams, I (Igor) | | WEG | 1174.7 | 1181.8 | George Trial 1 2020 (U14) | 4 | 2020-01-25 | S | B | 1 | 0.7 | 0.3 | 5.1 | 0.67 | 0.33 | 6.6 |
| 1311.3 | 1348 | 20 | 20 | Williams, I (Igor) | | WEG | 1255.3 | 1244.4 | Western Cape Schools Individuals 2019 (U13 Boys) | 6 | 2019-05-19 | S | W | 1 | 0.61 | 0.39 | 6.5 | 0.66 | 0.34 | 6.8 |
