Event: Northamptonshire Silver King League

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Opponent Rating Result
Nicholas J Caldwell 1765 0 - 1
Daniel Savin 0 1 - 0
Hugh W Murphy 2194 ½ - ½
Martin Crichton 1953 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1478 = (5912 + 400 * (1 - 1)) / 4)

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