Event: Division One

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Opponent Rating Result
Richard Mycroft 192 ½ - ½
Nicholas A Walker 182 ½ - ½
Philip J Holt 201 0 - 1
Darren P Wheeler 209 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-4 = (784 + 400 * (0 - 2)) / 4)

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