Event: York Club Championship

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Opponent	Rating	Result
David Wm Smith	1787	0 - 1
Will Orpin	1264	1 - 0
Herbert Lockwood	1605	0 - 1
Toby Conyers-Kelly	1185	1 - 0
Stephen Donkin	1529	½ - ½
Daniel Meredith	1737	0 - 1
Norman G Andrews	1604	0 - 1
Vinayak Prasad	1329	1 - 0(def)

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

1416 = (10711 + 400 * (2 - 4)) / 7)