Event: Division 4

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Opponent Rating Result
Bill Kimberley 1025 0 - 1
Matthew Blackwell 1025 0 - 1
Fernando Navio 1025 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

892 = (3075 + 400 * (1 - 2)) / 3)

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