Event: Combined Banks and Insurance Chess League 2002-03

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Opponent	Rating	Result
David MP Burford	0	0 - 1
Michael N Jones	0	1 - 0
Colin SB Howe	0	0 - 1
Thomas Ross	0	1 - 0
Alan F Jackson	0	1 - 0

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

80 = (0 + 400 * (3 - 2)) / 5)