Event: Durham League Division 2

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Opponent	Rating	Result
Geoff Raw	0	0 - 1
John Blewett	0	0 - 1
Carl Stephens	0	½ - ½
Erin Kingston	0	1 - 0
Ian Hunter	0	0 - 1
Felix Watts	0	1 - 0

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

-67 = (0 + 400 * (2 - 3)) / 6)