Event: Folkestone Club Championship

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Opponent Rating Result
Charles De Freitas 1250 1 - 0
James PW Smith 1368 1 - 0
John B Atherton 1870 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1629 = (4488 + 400 * (2 - 1)) / 3)

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