Event: R Division

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Opponent Rating Result
Mohammed Andeel 1414 0 - 1
Lewis Sharples 900 1 - 0
Mohammed Andeel 1414 1 - 0
Lewis Sharples 900 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1357 = (4628 + 400 * (3 - 1)) / 4)

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