Event: Peter Hughes

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Opponent Rating Result
Keith Thompson 163 ½ - ½
Keith Thompson 163 ½ - ½
Shaun J Culkin 167 ½ - ½
Steve R Hodge 189 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

71 = (682 + 400 * (0 - 1)) / 4)

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