Event: B Division

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Opponent	Rating	Result
Jonathan M Smith	2052	½ - ½
Robin IR Wilding	1836	0 - 1
Simeon Sakic	1968	1 - 0
Neville Barnes	1860	0 - 1
Dave Toole	1843	½ - ½
Yaoyao Zhu	2009	½ - ½
Daniel Okorafor	1800	0 - 1

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

1795 = (13368 + 400 * (1 - 3)) / 7)