Event: June Swiss

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Opponent Rating Result
Andrew D Hartland 1813 0 - 1
Armando Galletti 1733 1 - 0
Matthew J Morter 1599 0 - 1
Heather Enid Walker 1250 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1599 = (6395 + 400 * (2 - 2)) / 4)

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