Event: Division 3

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Opponent Rating Result
Peter Shaw 108 0 - 1
William G Armstrong 139 1 - 0
Sam Throsby 130 1 - 0
John R Day 135 1 - 0
Philip N Birks 142 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

371 = (654 + 400 * (4 - 1)) / 5)

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