Event: Summer League Division 4

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Opponent Rating Result
Sarah L White 1512 0 - 1
Michael W Simmons 1152 1 - 0
Lawrence Heijbroek 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1021 = (2664 + 400 * (2 - 1)) / 3)

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