Event: York Club Championship

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Opponent	Rating	Result
Ian Craig	1353	1 - 0
Daniel Meredith	1548	1 - 0
Paul M Barber	1958	0(def) - 1
Paul W Jones	1643	1 - 0
M Paul Townsend	2282	0(def) - 1
Derek Toyne	1604	1 - 0
A Jon Griffith	1780	0 - 1
Herbert Lockwood	1623	0(def) - 1

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

1826 = (7928 + 400 * (4 - 1)) / 5)