Event: The Friendly League

Opponent Rating Result
Andrew Hargreaves 1792 ½ - ½
David A Talbot 1786 ½ - ½
Yousaf Ahmed 0 1 - 0
Peter Dickinson 0 1 - 0
William J Moffatt 1677 0 - 1
Paul Morgan 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1009 = (5255 + 400 * (3 - 1)) / 6)

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