Event: Richard Furness(500) League

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Opponent Rating Result
Peter J Mulleady 2013 0 - 1
Charles Metcalfe 1653 0 - 1
Bryan Slater 1550 0 - 1
Stephen Deakin 1650 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1517 = (6866 + 400 * (1 - 3)) / 4)

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