Event: Division Two

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Opponent Rating Result
John Staniforth 1836 ½ - ½
Nathanael Kasafir 1861 ½ - ½
Okwose Marc Obi 1890 0 - 1
Jana M Bellin 1930 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1779 = (7517 + 400 * (0 - 1)) / 4)

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