Event: D&DCL Div 3

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Opponent Rating Result
Chris Sharp 1563 1 - 0
Craig Fores 1408 0 - 1
Roger Moors 1536 ½ - ½
Piotr Natoniewski 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1227 = (4507 + 400 * (2 - 1)) / 4)

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