Event: Hepolite (Rapidplay)

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Opponent Rating Result
Peter D Rooney 2099 0 - 1
Peter D Rooney 2099 0 - 1
Gerard P Killoran 1837 1 - 0
Gerard P Killoran 1837 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1768 = (7872 + 400 * (1 - 3)) / 4)

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