Event: Division 3

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Opponent Rating Result
William G Armstrong 144 1 - 0
Steve R Hill 145 0 - 1
Neville Layhe 137 1 - 0
Jon EW Blackburn 139 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

341 = (565 + 400 * (3 - 1)) / 4)

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