Event: TCL Division 4

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Opponent Rating Result
Alan F Webster 70 0 - 1
Graham A Mill-Wilson 106 0 - 1
John E Dean 108 1 - 0
Kieran Raine 104 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-103 = (388 + 400 * (1 - 3)) / 4)

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