| 944.1 | 960.8 | 20 | 20 | Van Der Westhuizen, PJ (Petrus) | | NBR | 1322.9 | 1325.6 | Laerskool Brits Tournament 2018 (U18) | 1 | 2018-08-04 | S | W | 0 | 0.1 | -0.1 | -1.7 | 0.12 | -0.12 | -2.4 |
| 837.2 | 837.2 | 20 | 20 | Van Der Westhuizen, PJ (Petrus) | | NBR | 1307.7 | 1316 | Laerskool Vastrap 2018 (Open) | 1 | 2018-02-03 | S | B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 788 | 788 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1206 | 1206 | Bojanala Inter-Region 2017 (U16) | 2 | 2017-09-16 | S | B | 0 | 0.07 | -0.07 | -1.2 | -0.07 | 0.07 | 1.4 |
| 741 | 741 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1179 | 1179 | Laerskool Rustenburg 2016 (U16) | 4 | 2016-08-27 | S | W | 0 | 0.06 | -0.06 | -1 | -0.06 | 0.06 | 1.2 |
| 643 | 643 | 20 | 20 | Van Der Westhuizen, Pj (Petrus) | | NBR | 1136 | 1136 | Grenville Chess U14 | 1 | 2014-08-16 | S | B | 0 | 0.04 | -0.04 | -0.7 | -0.04 | 0.04 | 0.8 |
