Event: R Division

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Opponent Rating Result
Jacob Clay 700 0 - 1
Hana Al-Azamai 1000 1 - 0
Jacob Clay 700 0 - 1
Hana Al-Azamai 1000 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

850 = (3400 + 400 * (2 - 2)) / 4)

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