Event: Club Challengers

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Opponent	Rating	Result
Steve J Pullinger	1918	1 - 0(def)
John E Dolamore	1750	0 - 1
Matthew J Morter	1598

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1350 = (1750 + 400 * (0 - 1)) / 1)