| Rating change | Rank | ||
| 1. 04.12.1998 3rd Pan-African Championship | +0 | 1782 | N/A |
| 2. 13.04.1998 3rd Pan-African Championship Finals | -43 | 1739 | N/A |
| 3. 07.02.2016 City of Cape Town International | -122 | 1629 | 331st |
| 4. 04.02.2018 Cape Town International | -171 | 1458 | 566th |
