Event: Northamptonshire Silver King League

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Opponent Rating Result
Tim Broad 1555 0 - 1
Greg Rynkowski 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

778 = (1555 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Ian M Andrews 1353 0 - 1
Matthew Edwards 1338 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

946 = (2691 + 400 * (0 - 2)) / 2)