Event: Online Division 2

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Opponent Rating Result
Andrew T Jones 1400 ½ - ½
Mark A Keady 1882 0 - 1
Andrew T Jones 1409 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1564 = (4691 + 400 * (1 - 1)) / 3)

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