Event: Internal Standardplay

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Opponent Rating Result
Marcin Rodzik 1477 0 - 1
Joseph Braithwaite 1764 0 - 1
Marcin Rodzik 1485 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1175 = (4726 + 400 * (0 - 3)) / 3)

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