Event: HERCA Championship

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Opponent Rating Result
Douglas Vleeshhouwer 2018 0 - 1
Mark I Collinson 1961 0 - 1
Stephen Crow 1876 0 - 1
Andrei Ciuravin 2184 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1610 = (8039 + 400 * (0 - 4)) / 4)

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