| Opponent |
Rating |
Result |
| Edward S Oxley |
141 |
½ - ½ |
| Douglas Vleeshhouwer |
166 |
0 - 1 |
| Graham Lee |
113 |
1 - 0 |
| Steve Hughes |
92 |
0 - 1 |
| J Gerry Johnstone |
128 |
½ - ½ |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
48 = (640 + 400 * (1 - 2)) / 5)
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