Event: Division 2

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Opponent Rating Result
Rob E Wilden 149 0 - 1
Raymond N Francis 130 ½ - ½
Matthew Hammond 140 0 - 1
Chung W Ho 116 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

34 = (535 + 400 * (1 - 2)) / 4)

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