Event: Barclays Chess Club Rapid Tournament No. 1/2019

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Opponent	Rating	Result
Daniel Lindner	0	0 - 1
Yaroslav Lyulko	0	0 - 1
Adrian Nash	0	1 - 0
Konstantinos Sakellariou	0	0 - 1
Sam Thakkar	0	½ - ½
Jana Hancock	0	0 - 1
Rohan Krishniah	0	0 - 1

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

-229 = (0 + 400 * (1 - 5)) / 7)