Event: Division 5

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Opponent Rating Result
Adam Fields 90 0 - 1
Peter Shaw 100 0 - 1
Oliver J Horrocks 88 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-307 = (278 + 400 * (0 - 3)) / 3)

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Opponent Rating Result
Philip Wright 69 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

69 = (69 + 400 * (0 - 0)) / 1)