| 1171.4 | 1162.2 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1523.4 | 1534.2 | Laerskool Brits 2019 (U16) | 5 | 2019-08-31 | S | W | 0.5 | 0.13 | 0.37 | 6.1 | 0.11 | 0.39 | 7.8 |
| 981.5 | 977 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1330.4 | 1332.5 | Boys and Girls 2018 (U14 Boys) | 2 | 2018-08-25 | S | W | 0 | 0.14 | -0.14 | -2.3 | 0.13 | -0.13 | -2.6 |
| 981.5 | 977 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1330.4 | 1332.5 | Laerskool Brits Tournament 2018 (U14) | 5 | 2018-08-04 | S | B | 0 | 0.05 | -0.05 | -0.8 | 0.04 | -0.04 | -0.8 |
| 998 | 998 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1089 | 1089 | 2017 Inter-Regional (Under 14 Open) | 4 | 2017-05-13 | S | W | 0 | 0.38 | -0.38 | -6.3 | -0.38 | 0.38 | 7.6 |
| 1040 | 1040 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1176 | 1176 | Hoerskool Brits Chess 2017 (A) | 3 | 2017-03-11 | S | W | 0 | 0.32 | -0.32 | -5.3 | -0.32 | 0.32 | 6.4 |
| 1048 | 1048 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1162 | 1162 | Mountain Cambridge School Chess 2016 (U12) | 5 | 2016-09-10 | S | B | 0.5 | 0.34 | 0.16 | 2.7 | 0.16 | 0.34 | 6.8 |
| 1008 | 1008 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1076 | 1076 | Freedom Day Chess Tournament 2016 (U12) | 4 | 1900-01-01 | S | B | 0 | 0.41 | -0.41 | -6.8 | -0.41 | 0.41 | 8.2 |
| 897 | 897 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1046 | 1046 | Gauteng Schools Mamelodi Cluster 2016 (U11 Boys) | 3 | 2016-04-07 | S | B | 0 | 0.3 | -0.3 | -5 | -0.3 | 0.3 | 6 |
| 901 | 901 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1105 | 1105 | Bojanala Registration 2016 (U12) | 4 | 2016-01-30 | S | W | 0 | 0.24 | -0.24 | -4 | -0.24 | 0.24 | 4.8 |
| 911 | 911 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1146 | 1146 | Grenville Nw Regionals (Under 12 (Born 2004 2005) | 4 | 2015-10-24 | S | W | 0 | 0.21 | -0.21 | -3.5 | -0.21 | 0.21 | 4.2 |
| 913 | 913 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 1004 | 1004 | 2015 Fields Chess Tournament (Under 12 (Born 2004 2005) | 4 | 2015-08-15 | S | B | 1 | 0.38 | 0.62 | 10.3 | 0.62 | 0.38 | 7.6 |
| 0 | 0 | 20 | 20 | Lefyedi, T (Thatego) | | NBR | 615 | 615 | 2014 Laerskool Proteapark (U 10) | 3 | 2014-08-30 | S | W | 0 | 0 | 0 | 0 | 0 | 0 | 0 |