Event: Kenneth Appleby

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Opponent Rating Result
Ian D Strickland 122 1 - 0
Darren McCarthy 132 0 - 1
Pete Farrell 115 0 - 1
Tom Devlin 106 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-81 = (475 + 400 * (1 - 3)) / 4)

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