Event: York Club Championship

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Opponent	Rating	Result
Aaron Rich	1772	0 - 1
Paul Masiak	0	1 - 0
T Noel Stewart	0	½ - ½
David Wm Smith	0	0 - 1
Norman G Andrews	1709	½ - ½
Toby Conyers-Kelly	0	½ - ½
Ian Craig	0	1 - 0
Matthew Drury	0	1 - 0
Paul M Barber	0	0 - 1

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

387 = (3481 + 400 * (3 - 3)) / 9)