Event: City Chess Swiss 2019-20

Opponent Rating Result
Ray P Hamilton 1488 1 - 0
Serhan Celebi 0 1 - 0
Nikolay Naumovich 0 0 - 1
Inga Jirgensone 0 1 - 0
David R Chambers 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

538 = (1488 + 400 * (4 - 1)) / 5)

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