Event: Burns Summer Tournament

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Opponent Rating Result
Dave Colledge 1738 0 - 1
Yahya Durani 1402 0 - 1
Adam Mathers 0 0 - 1
Dave Young 1399 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

735 = (4539 + 400 * (0 - 4)) / 4)

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