Event: Division 3

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Opponent Rating Result
Paul Richardson 140 1 - 0
John D Kimber 137 0 - 1
Dona Strauss 126 1 - 0
Eric Granzelius 146 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

337 = (549 + 400 * (3 - 1)) / 4)

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