Event: Epsom Gunpowder Blitz

Opponent Rating Result
Peter G Large 0 0 - 1
Andrew Coppin 0 1 - 0
Daniel J Young 0 0 - 1
Alex Banks 0 0 - 1
David Flewellen 0 1 - 0
Maya Keen 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-133 = (0 + 400 * (2 - 4)) / 6)

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