Event: HERCA Championship

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Opponent Rating Result
Stephen Crow 1876 0 - 1
Chris J Matthews 1791 1 - 0
Andrei Ciuravin 2184 1 - 0
Douglas Vleeshhouwer 2018 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1967 = (7869 + 400 * (2 - 2)) / 4)

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