Event: Division 2

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Opponent Rating Result
Stephen J Emmerton 127 0 - 1
Julian N Hawthorne 128 0 - 1
Jake Darlington 100 0 - 1
Neville Layhe 126 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-280 = (481 + 400 * (0 - 4)) / 4)

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