Event: City Chess Swiss 2018-19

Opponent Rating Result
Perry Siriyatorn 0 0 - 1
David A Morgan 0 1 - 0
Perry Siriyatorn 0 0 - 1
Antony C Hall 0 ½ - ½
Alex Wickens 0 1 - 0
Perry Siriyatorn 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-67 = (0 + 400 * (2 - 3)) / 6)

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