Event: Division 4

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Opponent Rating Result
Tony B Packham 1836 0 - 1
Jack Macnamara 1327 1 - 0
Viktoria Jakcsiova 1496 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1553 = (4659 + 400 * (1 - 1)) / 3)

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