Event: B&DCL Div 4

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Opponent Rating Result
Seth DR Rider 109 0 - 1
Michael N Davidson 107 0 - 1
Ciaran Southey 107 0 - 1
John E Harris 120 ½ - ½
John E Harris 120 1 - 0
Ciaran Southey 107 0 - 1
Graham Hillman 116 0 - 1
SJC Chappell 125 ½ - ½
Tim Joyce 127 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-107 = (1038 + 400 * (1 - 6)) / 9)

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