Event: City Chess Swiss 2017-18

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Opponent	Rating	Result
Charles L Proctor	0	½ - ½
Johan Rydahl	0	0 - 1
Anthony R Kent	0	½ - ½
Imran Ahmad	0	½ - ½
Paul Lickman	0	½ - ½

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

-80 = (0 + 400 * (0 - 1)) / 5)