Event: Division 2

Opponent Rating Result
Jim A Arbuckle 1733 1 - 0
Barrie Quin 1561 1 - 0
Fred Collins 0 1 - 0
Vladimir Chtym 1513 1 - 0
John A Figgins 1637 ½ - ½
Simon A White 1670 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1686 = (8114 + 400 * (5 - 0)) / 6)

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