Event: Division 4

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Opponent Rating Result
Julian P Cook 90 0 - 1
S Ali Arshad 90 1 - 0
Neil Hankey 90 0 - 1
Ben Harrison 90 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-110 = (360 + 400 * (1 - 3)) / 4)

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