Event: Minor Division

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Opponent Rating Result
Olivia Chen 72 1 - 0
Olivia Chen 48 1 - 0
Robert Trevis 61 1 - 0
David J Parsons 20 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

450 = (201 + 400 * (4 - 0)) / 4)

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