Event: Division 1

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Opponent Rating Result
Joshua Simpson 1886 0 - 1
Richard S Dobedoe 1786 1 - 0
Mike Nevin 1636 0 - 1
Mike J Donnelly 1975 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1621 = (7283 + 400 * (1 - 3)) / 4)

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