Event: NCCA League Division 2

Opponent Rating Result
Samuel Gaffney 1821 0 - 1
Robin Blackwell 1827 1 - 0
Daniel R Hedges 1828 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1692 = (5476 + 400 * (1 - 2)) / 3)

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