| Rating change | Rank | ||
| 1. 31.08.1993 2nd World Championships | +37 | 1937 | N/A |
| 2. 31.08.1993 2nd World Championships [Last rounds] | -12 | 1925 | N/A |
| 3. 31.10.1995 3rd World Championships | -36 | 1889 | N/A |
| 4. 18.11.2002 4th Trans-Tasman Challenge | +1 | 1874 | N/A |
| 5. 29.11.2009 World Scrabble Championship | -7 | 1867 | 137th |
| 6. 30.11.2009 Causeway Challenge | -22 | 1845 | 156th |
| 7. 16.08.2010 Trans-Tasman 2010 | +29 | 1874 | 137th |
| 8. 15.10.2011 2011 World Scrabble Championship | +4 | 1878 | 146th |
| 9. 07.12.2013 Scrabble Champions Tournament Main Event (WSC) | -102 | 1776 | 222nd |
| 10. 02.11.2014 Trans-Tasman Challenge | +25 | 1801 | 211th |
| 11. 07.11.2015 WESPAC - Perth | -72 | 1729 | 253rd |
| 12. 08.11.2015 WESPAC Sunday Open | +9 | 1738 | 244th |
| 13. 19.11.2017 WESPA Seniors Warmup | +20 | 1758 | 218th |
| 14. 23.11.2017 WESPA Seniors Championship | -40 | 1718 | 254th |
| 15. 22.04.2019 New Zealand Masters | +70 | 1788 | 175th |
| 16. 03.06.2019 New Zealand National Championship | +8 | 1796 | 163rd |
