Event: Division One

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Opponent Rating Result
Simon Wilks 193 0 - 1
John Tennyson 173 ½ - ½
Ed Stembridge 166 0 - 1
Rik H Thomas 176 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-123 = (708 + 400 * (0 - 3)) / 4)

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