Event: Belper Club Championship

Opponent Rating Result
Andrew Townsend 0 0 - 1
Ronald S Harrison 0 0 - 1
Benjamin Lester 0 1 - 0
Nigel D Marshall 0 1 - 0
John Potter 0 0 - 1
Matthew Bubis 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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

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