| Opponent |
Rating |
Result |
| Colin Ross |
0 |
1 - 0 |
| John C Tompson |
0 |
0 - 1 |
| David Smith |
0 |
1 - 0 |
| Edward T Bromilow |
0 |
1 - 0 |
| Maurice J Hill |
0 |
1 - 0 |
| Martin Pettinger |
0 |
0 - 1 |
| Tomasz D Adamski |
0 |
1 - 0 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
171 = (0 + 400 * (5 - 2)) / 7)
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