Event: Hillingdon Div 2

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Opponent Rating Result
Alastair G Johnstone 1607 1 - 0
David Housego 1344 ½ - ½
Jim I Wrigglesworth 1427 1 - 0
Phil S Humphry 1410 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1747 = (5788 + 400 * (3 - 0)) / 4)

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