Event: York Club Championship

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Opponent	Rating	Result
John Foo	1508	1 - 0
Herbert Lockwood	1633	1 - 0
M Paul Townsend	2238	0 - 1
Derek Toyne	1609	1 - 0(def)
Paul M Barber	1960	0(def) - 1
Paul W Jones	1638	1 - 0
Aaron Rich	1908	0 - 1
Stephen Donkin	1552	½ - ½

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

1813 = (10477 + 400 * (3 - 2)) / 6)