Event: Summer Rapid Tournament

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Opponent	Rating	Result
Deborah Edmundson	0
Michael Siddle	0	½ - ½
Richard Manchester	0
Paul Mcguigan	0	0 - 1
Bryan J Bainbridge	0	0 - 1
Robert Berry	0
Chris Clynes	0	0 - 1
Deborah Edmundson	0
Michael Siddle	0	0 - 1
Adrian Dilley	0	0 - 1
Richard Manchester	0
Paul Mcguigan	0	0 - 1
Bryan J Bainbridge	0	1 - 0
Robert Berry	0
Chris Clynes	0	0 - 1
Adrian Dilley	0	0 - 1

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

-280 = (0 + 400 * (1 - 8)) / 10)