Event: Winter Online

Opponent Rating Result
Andrew Crowther 1672 0 - 1
Andrew Crowther 1672 0 - 1
Rebecca Correa 1432 0 - 1
Rebecca Correa 1432 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1352 = (6208 + 400 * (1 - 3)) / 4)

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