| Opponent |
Rating |
Result |
| Leslie Hughes |
94 |
0 - 1 |
| Ken Lawson |
68 |
0 - 1 |
| John Morgan |
85 |
1 - 0 |
| Dennis Davies |
109 |
0 - 1 |
| Leslie Hughes |
94 |
½ - ½ |
| John Regan |
112 |
1 - 0 |
| Ken Gorman |
103 |
0 - 1 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
-19 = (665 + 400 * (2 - 4)) / 7)
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