| 1630.6 | 1648.5 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1677.5 | 1679.1 | 2019 Capablanca Chess Festival (RR C) | 1 | 2019-04-18 | S | W | 0 | 0.49 | -0.49 | -9.8 | 0.51 | -0.51 | -10.2 |
| 1605.2 | 1601.9 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1585.1 | 1586.4 | 2018 D4 Tshwane South Schools League Finals (U19) | 1 | 2018-08-04 | S | W | 0 | 0.57 | -0.57 | -9.5 | 0.56 | -0.56 | -11.2 |
| 1576.2 | 1574.2 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1604.5 | 1612.9 | 2018 South African Junior Closed Chess Championships (U18 Open) | 4 | 2018-04-03 | S | B | 1 | 0.43 | 0.57 | 11.4 | 0.41 | 0.59 | 11.8 |
| 1578.9 | 1576.7 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1611 | 1621.3 | 2018 D4 Tshwane North Individual Chess Championships (U19 Boys) | 4 | 2018-03-10 | S | W | 0.5 | 0.5 | 0 | 0 | 0.49 | 0.01 | 0.2 |
| 1467 | 1467 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1590 | 1590 | 2017 D4 Primary League Final (U19) | 1 | 2017-08-12 | S | B | 1 | 0.33 | 0.67 | 11.1 | 0.67 | 0.33 | 6.6 |
| 1575 | 1575 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1600 | 1600 | 2017 Pss Capablanca (Rr E) | 4 | 2017-04-28 | S | W | 0 | 0.47 | -0.47 | -9.4 | -0.47 | 0.47 | 9.4 |
| 1524 | 1524 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1625 | 1625 | 2017 Piet Robbertse (Super A) | 1 | 2017-01-27 | S | B | 1 | 0.36 | 0.64 | 12 | 0.64 | 0.36 | 7.2 |
| 1368 | 1368 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1511 | 1511 | Swartkop Open 2016 (A) | 2 | 2016-06-25 | S | W | 0.5 | 0.31 | 0.19 | 3.2 | 0.19 | 0.31 | 6.2 |
| 1391 | 1391 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1523 | 1523 | Lubowski Open Chess Tournament 2016 (A) | 2 | 2016-05-21 | S | B | 0.5 | 0.32 | 0.18 | 3.6 | 0.18 | 0.32 | 6.4 |
| 1563 | 1563 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1458 | 1458 | D4 Individual Trails 2015 (U15 Boys) | 3 | 2015-03-14 | S | B | 0 | 0.64 | -0.64 | -10.6 | -0.64 | 0.64 | 12.8 |
| 1563 | 1563 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1458 | 1458 | Hennops Open 2015 Section A - Open To All | 4 | 2015-02-28 | S | B | 1 | 0.64 | 0.36 | 6 | 0.36 | 0.64 | 12.8 |
| 1466 | 1466 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1296 | 1296 | Theresapark Open 2014 - Sec A Open To All | 3 | 2014-05-24 | S | W | 1 | 0.72 | 0.28 | 4.6 | 0.28 | 0.72 | 14.4 |
| 1461 | 1461 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1256 | 1256 | Alekhine Open 2013 Section B | 3 | 2013-07-27 | S | W | 0 | 0.76 | -0.76 | -14.3 | -0.76 | 0.76 | 15.2 |
| 1461 | 1461 | 20 | 20 | Van Der Westhuizen, D (Donald) | | GTP | 1256 | 1256 | Alekhine Open 2013 Section B | 3 | 2013-07-27 | S | W | 0 | 0.76 | -0.76 | -14.3 | -0.76 | 0.76 | 15.2 |
