Event: Woodhouse Cup

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Opponent Rating Result
David A Patrick 0 ½ - ½
Dave Gray 0 ½ - ½
Geoffrey D Brown 0 0 - 1
Daniel J Staples 0 0 - 1
John Thackray 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-160 = (0 + 400 * (0 - 2)) / 5)

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