Event: Combined Banks and Insurance Chess League 2012-13

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Opponent	Rating	Result
Shahab Uddin	0	1 - 0
Douglas Hogan	0	½ - ½
Mark S Gray	0	0 - 1
Steven JF Walsh	0	0 - 1
Martin C Page	0	0 - 1

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

-160 = (0 + 400 * (1 - 3)) / 5)