Event: League Division 3

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Opponent Rating Result
Luke O'Keeffe 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Charles Carpenter 0 1 - 0
Mark A Herbert 1186 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

993 = (1186 + 400 * (2 - 0)) / 2)