Event: LADDER

Opponent Rating Result
David Wallis 0 0 - 1
Paul W O'Brien 0 1 - 0
Chris Jones 0 0 - 1
Ben Glyn-Jones 0 1 - 0
Philip Crompton 0 0 - 1
Graham Davie 0 0 - 1
Ben Glyn-Jones 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-57 = (0 + 400 * (3 - 4)) / 7)

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