Event: Division 5

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Opponent Rating Result
Holly Jacobson 89 1 - 0
Philip Erentz 90 ½ - ½
Daniel Hardman 105 1 - 0
Charlie Brown 23 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

377 = (307 + 400 * (3 - 0)) / 4)

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