Event: Silver Rook

Opponent Rating Result
David Callaghan 0 1 - 0
John Tate 0 0 - 1
John Hipshon 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-133 = (0 + 400 * (1 - 2)) / 3)

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Opponent Rating Result
Jeff Dutton 0 0 - 1
Olegs K Kungurovs 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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