Event: Norfolk and Norwich Championship

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Opponent Rating Result
Bharath Klass 1715 1 - 0
Stephen LA Orton 2143 0 - 1
Vivash Samarakoon 2160 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1873 = (6018 + 400 * (1 - 2)) / 3)

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