Event: Folkestone Club Championship

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Opponent Rating Result
Andrew M Haycock 106 ½ - ½
Robert Twigg 80 0 - 1
Alec Nicol 143 0 - 1
Jim R Bayford 180 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-173 = (509 + 400 * (0 - 3)) / 4)

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