Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Jonathan Whiteley	0	0 - 1
Mike Hoyes	1255	1 - 0
Stefan Lewins	0	0 - 1
Rohan Kumar	0	0 - 1
Daniel Crampton	1213	0 - 1
Harry Heather	0	0 - 1
Connor Fairfield	1195	0 - 1
Niko Abramowicz	0	0 - 1

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

158 = (3663 + 400 * (1 - 7)) / 8)