Event: NCCA League Division 4

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Opponent Rating Result
Heather Enid Walker 1269 1 - 0
Jeremy Bishop 1200 0 - 1
Tony R Larner 1486 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1452 = (3955 + 400 * (2 - 1)) / 3)

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