Event: NSDCA Division 4

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Opponent Rating Result
James Wolstenholme 1586 0 - 1
Jamie Roberts 1393 0 - 1
Gennady Tabala 1234 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1004 = (4213 + 400 * (0 - 3)) / 3)

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