Event: Northamptonshire Silver King League Division 2

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Opponent Rating Result
Jim Sorrie 1518 0 - 1
Omar Oliveri 1628 0 - 1
Robert Lepley 1420 1 - 0
William Mount 1307 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1468 = (5873 + 400 * (2 - 2)) / 4)

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