Event: Summer KO

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Opponent	Rating	Result
Phil Eastlake	1797	1 - 0
John S Marsh	1714	1 - 0
Matthew Forster	2122	0 - 1

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

2011 = (5633 + 400 * (2 - 1)) / 3)