Event: Combined Banks and Insurance Chess League 2009-10

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Opponent Rating Result
David L Barrett 0 1 - 0
D Ian Calvert 0 ½ - ½
Angus S James 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

267 = (0 + 400 * (2 - 0)) / 3)

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