Event: HDCA Summer League Division 2

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Opponent Rating Result
Graham Lee 113 1 - 0
John Thompson 101 ½ - ½
Peter Morgan 125 1 - 0
David P Thrun 94 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

308 = (433 + 400 * (2 - 0)) / 4)

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