Event: R Division

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Opponent Rating Result
Dominic Duncombe 1100 1 - 0
Edward Chu 1472 0 - 1
Dominic Duncombe 1100 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1357 = (3672 + 400 * (2 - 1)) / 3)

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