| Opponent |
Rating |
Result |
| Ron A Stather |
133 |
0 - 1 |
| Stuart McLaughlin |
84 |
0 - 1 |
| Peter R Archer |
107 |
0 - 1 |
| Gordon Middlemiss |
104 |
0 - 1 |
| Nick Tadd |
74 |
1 - 0 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
-140 = (502 + 400 * (1 - 4)) / 5)
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