Event: Hillingdon Div 1

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Opponent Rating Result
David J White 1786 ½ - ½
Andrew Hayler 1947 1 - 0
David J White 1787 1 - 0
Nigel RE Alldritt 2031 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2188 = (7551 + 400 * (3 - 0)) / 4)

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