Event: Max 560

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Opponent	Rating	Result
T Giles Stanton	112	0 - 1
Chris Williamson	98	0 - 1
Geoffrey C Rosser	112	0 - 1
Robert Marks	112	0 - 1
T Giles Stanton	112	1 - 0
Chris Williamson	98	1 - 0
Geoffrey C Rosser	112	0 - 1
Robert Marks	112	0 - 1

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

-92 = (868 + 400 * (2 - 6)) / 8)