Event: Summer Open Division

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Opponent Rating Result
Philip Purcell 184 ½ - ½
Golam S Ali 179 1 - 0
Philip Purcell 184 ½ - ½
Golam S Ali 179 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

182 = (726 + 400 * (1 - 1)) / 4)

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