Event: Division 3

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Opponent Rating Result
Igor Doklestic 1928 0 - 1
Jared Kennedy 1753 ½ - ½
Ian G Sandford 1861 0 - 1
Nigel Wilcox 1655 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1699 = (7197 + 400 * (1 - 2)) / 4)

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