Event: R Division

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Opponent Rating Result
Sundaram Balaji 900 1 - 0
Jack Gladwin 1100 0 - 1
Sundaram Balaji 900 0 - 1
Jack Gladwin 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

800 = (4000 + 400 * (1 - 3)) / 4)

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