Event: Northamptonshire Silver King League Division 2

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Opponent Rating Result
James Moreton 1607 1 - 0
Tim Broad 1528 ½ - ½
John Edmundson 1240 ½ - ½
Thomas Rushton 1543 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1680 = (5918 + 400 * (2 - 0)) / 4)

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