Event: B&DCL Div 4

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Opponent Rating Result
Chris D Lane 114 0 - 1
Graham Morris 90 ½ - ½
Phil Holden 99 1 - 0
Jim Newman 102 1 - 0
Christine A Roberts 108 0 - 1
George Holden 80 0 - 1
Mihail Puiu Nutu 112 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-14 = (705 + 400 * (2 - 4)) / 7)

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