Event: Division Two

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Opponent Rating Result
Tim M Joslin 168 0 - 1
Geoffrey L Bishop 141 1 - 0
Andrew Medworth 146 0 - 1
Oren Levene 151 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-49 = (606 + 400 * (1 - 3)) / 4)

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