Event: June Swiss

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Opponent Rating Result
Heather Enid Walker 1250 1 - 0
David E Hall 1929 1 - 0
Philip R Bonafont 2119 0 - 1
Roy Hughes 2039 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1834 = (7337 + 400 * (2 - 2)) / 4)

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