| 1373.6 | 1382.6 | 20 | 20 | Van Der Westhuizen, PJ (Petrus) | | NBR | 1350.1 | 1360.2 | Lebone II Chess 2018 (U18) | 2 | 2018-09-01 | S | W | 0.5 | 0.57 | -0.07 | -1.2 | 0.57 | -0.07 | -1.4 |
| 1302.2 | 1294.4 | 20 | 20 | Van Der Westhuizen, PJ (Petrus) | | NBR | 1322.9 | 1325.6 | Laerskool Brits Tournament 2018 (U18) | 3 | 2018-08-04 | S | W | 0.5 | 0.52 | -0.02 | -0.3 | 0.51 | -0.01 | -0.2 |
| 1156 | 1156 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1159 | 1159 | Bojanala Regional Championship 2016 (U16) | 4 | 2016-10-15 | S | B | 1 | 0.5 | 0.5 | 8.3 | 0.5 | 0.5 | 10 |
| 1117 | 1117 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1161 | 1161 | Mountain Cambridge School Chess 2016 (U16) | 5 | 2016-09-10 | S | W | 0.5 | 0.44 | 0.06 | 1 | 0.06 | 0.44 | 8.8 |
| 972 | 972 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1179 | 1179 | Laerskool Rustenburg 2016 (U16) | 5 | 2016-08-27 | S | B | 0 | 0.23 | -0.23 | -3.8 | -0.23 | 0.23 | 4.6 |
| 932 | 932 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1191 | 1191 | Inter Region 2016 (U16) | 5 | 2016-05-07 | S | W | 0 | 0.18 | -0.18 | -3 | -0.18 | 0.18 | 3.6 |
