Event: KO 2021-22

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Opponent Rating Result
David Britton 1638 1 - 0
Richard Moorhouse 0 ½ - ½
Richard Moorhouse 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

546 = (1638 + 400 * (1 - 1)) / 3)

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