Event: Ron Bruce League

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Opponent Rating Result
Brian Medhurst 1693 1 - 0
Michael H Stinton-Brownbridge 1889 0 - 1
Nick J Butland 1957 ½ - ½
Nick J Butland 1957 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1874 = (7496 + 400 * (1 - 1)) / 4)

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