Event: Hull Club Championship

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Opponent	Rating	Result
Shaun J Culkin	165	0 - 1
Shaun Moody	63	1 - 0
William I Wright	107	0 - 1

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

-22 = (335 + 400 * (1 - 2)) / 3)