Event: York Club Championship

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Opponent	Rating	Result
Adam Ismail	0	0 - 1
Matthew Drury	0	½ - ½
Toby Conyers-Kelly	0	½ - ½
Norman G Andrews	1709	½ - ½
A Jon Griffith	0	0 - 1
Ian Craig	0	0 - 1
Christopher Dickson	0	½ - ½
Daniel Meredith	0	0 - 1

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

14 = (1709 + 400 * (0 - 4)) / 8)