Event: League Division 3

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Opponent Rating Result
Michael Carrigan 1155 1 - 0
Otegen Tilenserikuly 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

578 = (1155 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Maria Beatriz Andrade 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)