Event: York Club Championship

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Opponent	Rating	Result
John Foo	0	1 - 0
Christopher Dickson	0	1 - 0
Steve R Hodge	1989	1 - 0
M Paul Townsend	0	0 - 1
David Wm Smith	0	1 - 0
Aaron Rich	1772	0 - 1
Daniel Meredith	0	½ - ½
Adam Ismail	0	½ - ½
Stephen Donkin	0	1 - 0

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

551 = (3761 + 400 * (5 - 2)) / 9)