Event: ECF/OTB RapidPlay 22/12/21

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Opponent Rating Result
Lucian Stan 1390 0 - 1
Lucian Stan 1390 1 - 0
Lucian Stan 1390 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1257 = (4170 + 400 * (1 - 2)) / 3)

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