Event: Division One

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Opponent Rating Result
Mat Thompson 50 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-350 = (50 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
David Jeffs 140 ½ - ½
Graham H Lamb 135 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-63 = (275 + 400 * (0 - 1)) / 2)