Event: City Chess Swiss 2016-17

Opponent Rating Result
Michael R Wiltshire 0 0 - 1
Charles L Proctor 0 0 - 1
Gaurav Sharma 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 3)) / 3)

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Opponent Rating Result
Rob Cregan 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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