Event: Rapidplay League

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Opponent Rating Result
Ihor Lewyk 203 ½ - ½
Ihor Lewyk 203 1 - 0
Karim Khan 136 ½ - ½
Karim Khan 136 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

370 = (678 + 400 * (2 - 0)) / 4)

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