Event: Bloodworth League

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Opponent Rating Result
Derek J Scantlebury 91 1 - 0
Adam Hart-Davis 128 ½ - ½
Adam Hart-Davis 128 0 - 1
John E Dean 109 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

214 = (456 + 400 * (2 - 1)) / 4)

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