Event: R Division

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Opponent Rating Result
Bryony Eccleston 1335 0 - 1
Vachagan Otaryan 900 1 - 0
Bryony Eccleston 1335 1 - 0
Vachagan Otaryan 900 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1318 = (4470 + 400 * (3 - 1)) / 4)

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