Event: Div1

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Opponent Rating Result
Derek A Jarvis 168 0 - 1
Alan F Downham 168 0 - 1
Kenneth GE Morrison 171 1 - 0
Steve B Housley 153 0 - 1
Paul Williams 143 1 - 0
Tim Humphries 0 0 - 1
Kevin J Dalley 171 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-32 = (974 + 400 * (2 - 5)) / 7)

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Opponent Rating Result
Andrew J Mort 158 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-242 = (158 + 400 * (0 - 1)) / 1)