Event: The Friendly League

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Opponent Rating Result
Malcolm R Peacock 2087 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1687 = (2087 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Sebastien Szydlowski 1681 0 - 1
David A Talbot 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

641 = (1681 + 400 * (0 - 1)) / 2)