Event: Essex Summer Rapid Knockout

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Opponent Rating Result
Ryan Colclough 1682 1 - 0
Ryan Colclough 1682 0 - 1
Davi Diniz Afonso 1876 0 - 1
Davi Diniz Afonso 1876 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1679 = (7116 + 400 * (1 - 2)) / 4)

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