Event: Division 4 - Athenaeum Cup

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Opponent Rating Result
Michael Clark 125 ½ - ½
John HT Eddershaw 96 1 - 0
Mark Kirkham 107 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

376 = (328 + 400 * (2 - 0)) / 3)

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