Event: B&DCL Div 4

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Opponent Rating Result
Cornelius J Cornes 123 ½ - ½
Tim McCullagh 91 ½ - ½
Richard Smith 109 0 - 1
Rachel Richardson 77 1 - 0
Seth DR Rider 109 0 - 1
Rachel Richardson 77 1 - 0
David Lane 83 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

38 = (669 + 400 * (2 - 3)) / 7)

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