Event: SCL Div 3

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Opponent	Rating	Result
Stephen Nelson-Smith	0	½ - ½
Jerry Ingamells	0	1 - 0
Paul Vanlint	0	1 - 0
Chris E Kenward	0	½ - ½
David Graham	0	1 - 0
Maha Chandar	0	1 - 0
James A Barnett	0	1 - 0
Jerry Ingamells	0	1 - 0
Rob Davies	0	1 - 0

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

311 = (0 + 400 * (7 - 0)) / 9)