Event: Div 2 - Weston Trophy

Opponent Rating Result
Daniel JS Sullivan 2044 0 - 1
Andrew Butterworth 1914 0 - 1
Geoffrey D Brown 1786 1 - 0
Oliver Brennan 1797 1 - 0
Ewan Kershaw 1850 1 - 0
John A Clark 1830 1 - 0
Nathaniel Holroyd-Doveton 1707 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2018 = (12928 + 400 * (5 - 2)) / 7)

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