| Opponent |
Rating |
Result |
| Nigel D Marshall |
0 |
1 - 0 |
| David JF Woodhouse |
0 |
1 - 0 |
| Vaughan WG Smith |
0 |
1 - 0 |
| John Potter |
0 |
0 - 1 |
| Alan F Downham |
0 |
½ - ½ |
| Andrew Wathen |
0 |
1 - 0 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
200 = (0 + 400 * (4 - 1)) / 6)
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