Event: Division Two

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Opponent Rating Result
Joseph D Friar 1990 0 - 1
Keith L Escott 1908 ½ - ½
Maurice J Staples 2070 0 - 1
Jonathan Dale 1860 ½ - ½
Raymond Carpenter 1992 0 - 1
Nathanael Kasafir 1833 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1809 = (11653 + 400 * (1 - 3)) / 6)

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