Event: Rapidplay Cup

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Opponent Rating Result
Darren Pickering 1567 ½ - ½
Darren Pickering 1567 1 - 0
Oleg Cukovs 1901 1 - 0
Oleg Cukovs 1901 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1934 = (6936 + 400 * (2 - 0)) / 4)

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