Event: Division 3

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Opponent Rating Result
Nigel Wright 135 ½ - ½
Brian M Hayward 141 1 - 0
Michael Milford 108 1 - 0
Mark Darlington 150 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

234 = (534 + 400 * (2 - 1)) / 4)

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