Event: Durham League Division A

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Opponent Rating Result
Fedir Dyshliuk 1806 0 - 1
William Bartram 1954 0 - 1
Christopher Sayers 1638 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1666 = (5398 + 400 * (1 - 2)) / 3)

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Opponent Rating Result
William Bartram 1954 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1554 = (1954 + 400 * (0 - 1)) / 1)