Event: SCCA Division 2

Opponent Rating Result
John A Feavyour 0 0 - 1
James Irwin 1820 ½ - ½
Daniel Such 1473 0 - 1
Andrew Last 1450 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1086 = (4743 + 400 * (1 - 2)) / 4)

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