| Opponent |
Rating |
Result |
| Boris Garanins |
111 |
1 - 0(def) |
| Brant R Nuttall |
142 |
1 - 0 |
| Malcolm R Peacock |
189 |
½ - ½ |
| David E Aspinall |
144 |
½ - ½ |
| Roy Ellames |
187 |
0 - 1 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
166 = (662 + 400 * (1 - 1)) / 4)
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