Event: HDCA Summer League Division 1

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Opponent Rating Result
Edward S Oxley 141 ½ - ½
James Hall 114 0 - 1
Roger K Noble 144 ½ - ½
Giles Dunn 150 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

137 = (549 + 400 * (1 - 1)) / 4)

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