| Opponent |
Rating |
Result |
| David J Twitchell |
1867 |
1 - 0 |
| Andrew JS Slough |
1907 |
0 - 1 |
| Cor Dekker |
1902 |
1 - 0 |
| Barry Connor |
1706 |
1 - 0 |
| Chris Perkins |
1761 |
½ - ½ |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
1989 = (9143 + 400 * (3 - 1)) / 5)
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