Event: City Chess League 2018-19

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Opponent	Rating	Result
Michael C Forster	0	½ - ½
Daniel Lindner	0	½ - ½
Colin W Menzies	0	0 - 1
Michael C Forster	0	½ - ½

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

-100 = (0 + 400 * (0 - 1)) / 4)