| Opponent |
Rating |
Result |
| John Lightfoot |
95 |
1 - 0 |
| David J Barker |
102 |
0 - 1 |
| Harry Gardiner |
105 |
0 - 1 |
| Harry Gardiner |
90 |
0 - 1 |
| David E Ashby |
90 |
0 - 1 |
| Peter Shaw |
100 |
0 - 1 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
-170 = (582 + 400 * (1 - 5)) / 6)
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