Event: Division 1 - Open

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Opponent Rating Result
Steven J Levy 2074 0 - 1
Steven J Levy 2074 0 - 1
Martin Goldschmidt 1930 1 - 0
Paul Brooks 1855 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1783 = (7933 + 400 * (1 - 3)) / 4)

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