Event: C Division

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Opponent	Rating	Result
Rod Gilpin	107	0 - 1
Nikhil Bhandari	126	0 - 1
Paul Weightman	113	0 - 1
Kevin A Wilson	101	0 - 1
Paul Weightman	113	0 - 1
David Smith	88	0 - 1
Nikhil Bhandari	126	0 - 1
David Smith	88	½ - ½
Mike Hardy	83	1 - 0

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

-162 = (945 + 400 * (1 - 7)) / 9)