Event: Rapidplay Cup

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Opponent Rating Result
Darren Pickering 1576 ½ - ½
Darren Pickering 1576 1 - 0
Malcolm R Peacock 1954 ½ - ½
Malcolm R Peacock 1954 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1765 = (7060 + 400 * (1 - 1)) / 4)

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