Event: Club Championship

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Opponent Rating Result
Tony Lee 1173 0 - 1
Glen Smith 0 1 - 0
Tony Gill 1273 0 - 1
Andrew T Watson 1414 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

765 = (3860 + 400 * (1 - 3)) / 4)

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