Event: Division Two

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Opponent Rating Result
John Lee 120 0 - 1
Kevin J Spillane 123 0 - 1
Robert Grimes 141 1 - 0
Sam A Bradley 137 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-70 = (521 + 400 * (1 - 3)) / 4)

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