Event: Division 2

Opponent Rating Result
Louis Wigley 1638 1 - 0
William Burgess 1784 ½ - ½
Graham K Brown 1686 ½ - ½
Kevin N Bendall 1642 0 - 1
Tom A Cleverley 1567 0 - 1
Peter Nelson 1688 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1668 = (10005 + 400 * (2 - 2)) / 6)

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