| Opponent |
Rating |
Result |
| George I Miller |
1942 |
1 - 0 |
| Jonathan WR Underwood |
2163 |
½ - ½ |
| Reenen J Du Toit |
1200 |
1 - 0 |
| John Jenkins |
2071 |
1 - 0 |
| Malcolm H Cooper |
1817 |
1 - 0 |
performance = (sum(opponents ratings) + 400(wins-losses)) / games
2159 = (9193 + 400 * (4 - 0)) / 5)
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