Event: Barclays Chess Club Rapid Tournament No. 1/2012

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Opponent	Rating	Result
Daniel Cardnell	0	1 - 0
Mark S Gray	0	1 - 0
Daniel Lindner	0	½ - ½
James Angus	0	1 - 0
Paul Vanlint	0	1 - 0

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

320 = (0 + 400 * (4 - 0)) / 5)