Event: NCCA League Division 4

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Opponent Rating Result
David P Jones 1479 1 - 0
Jonathan R Reeve 1625 1 - 0
Heather Enid Walker 1234 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1846 = (4338 + 400 * (3 - 0)) / 3)

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