Event: B&DCL Div 3

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Opponent Rating Result
Jan Van Heeckeren 102 1 - 0
Richard Smith 146 0 - 1
Barry MS Jolly 115 1 - 0
Paul Sandy 115 0 - 1
Harold A Buckfield 121 1 - 0
John R Bowley 127 1 - 0
Chris D Lane 112 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

177 = (838 + 400 * (4 - 3)) / 7)

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