Event: City Chess Swiss 2019-20

Opponent Rating Result
Joseph S Rees 1413 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1413 = (1413 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Stephen C White 0 0 - 1
Rajesh Toleti 0 ½ - ½
Azmiddin Aminov 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-267 = (0 + 400 * (0 - 2)) / 3)