Event: Combined Banks and Insurance Chess League 2005-06

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Opponent	Rating	Result
Alan F Jackson	0	1 - 0
Julian D Ward	0	0 - 1
Helen Milligan	0	½ - ½
David A Tidmarsh	0	½ - ½
Gary Callan	0	0 - 1

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

-80 = (0 + 400 * (1 - 2)) / 5)