Event: SCL Div 1

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Opponent Rating Result
Keith DF Gregory 2009 ½ - ½
Graham J Willetts 1878 ½ - ½
Helen Archer-Lock 1642 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1843 = (5529 + 400 * (0 - 0)) / 3)

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