| Opponent |
Rating |
Result |
| John B Atherton |
157 |
0 - 1 |
| Kevin Smyth |
161 |
1 - 0 |
| Andrew M Haycock |
106 |
1 - 0 |
| Robert Twigg |
80 |
1 - 0 |
| Michael White |
68 |
1 - 0 |
| Alec Nicol |
143 |
0 - 1 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
253 = (715 + 400 * (4 - 2)) / 6)
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