| Opponent |
Rating |
Result |
| Douglas Vleeshhouwer |
166 |
0 - 1 |
| Derek A Sheppard |
149 |
½ - ½ |
| John Thackray |
167 |
½ - ½ |
| Mark I Collinson |
184 |
0 - 1 |
| Joe Varley |
162 |
½ - ½ |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
6 = (828 + 400 * (0 - 2)) / 5)
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