Event: Hillingdon Div 2

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Opponent Rating Result
Arthur Cann 1502 ½ - ½
S David Wray 1400 1 - 0
Alexander Horwood 1492 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1731 = (4394 + 400 * (2 - 0)) / 3)

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