Event: Summer Open Division

Opponent Rating Result
Philip Purcell 184 ½ - ½
John A Edge 178 0 - 1
Henrik Stepanyan 210 ½ - ½
Philip Purcell 184 0 - 1
John A Edge 178 0 - 1
Henrik Stepanyan 210 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-76 = (1144 + 400 * (0 - 4)) / 6)

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