| Opponent |
Rating |
Result |
| John P Allen |
163 |
½ - ½ |
| Krzysztof Jamroz |
183 |
0 - 1 |
| Jean-Baptiste Jugand |
177 |
0 - 1 |
| John H Lewin |
164 |
0 - 1 |
| Alan VH Sands |
163 |
1 - 0 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
10 = (850 + 400 * (1 - 3)) / 5)
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