Event: 2nd Cornwall Autumn Major

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Opponent Rating Result
Nigel J Kirkman 1794 1 - 0
Oliver Twentyman 1818 0 - 1
Michael Hill 1666 0 - 1
Michael P Freund 1627 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1626 = (6905 + 400 * (1 - 2)) / 4)

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