Event: Combined Banks and Insurance Chess League 2009-10

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Opponent	Rating	Result
Oliver Williams	0	1 - 0
Robert F Willmoth	0	½ - ½
Julian M Way	0	0 - 1
Brendan Keenan	0	1 - 0
Martin C Page	0	1 - 0

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

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