Event: Combined Banks and Insurance Chess League 2010-11

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Opponent	Rating	Result
Ian N Heppell	0	0 - 1
Imran Ahmad	0	1 - 0
Michael JM Rose	0	½ - ½
Martin C Page	0	½ - ½
Johan Rydahl	0	1 - 0

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

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