Event: Rapid Play League

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Opponent Rating Result
Sam Jacklin 1924 1 - 0
Sam Jacklin 1924 1 - 0
James P Collier 1697 1 - 0
James P Collier 1697 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2211 = (7242 + 400 * (4 - 0)) / 4)

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