Event: B&DCL Div 3

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Opponent Rating Result
Peter Donaldson 134 ½ - ½
David Arorash 126 ½ - ½
Richard Smith 146 0 - 1
John R Bowley 127 ½ - ½
Stephen Disney 131 1 - 0
Stephen Disney 131 1 - 0
Graham Hillman 135 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

247 = (930 + 400 * (3 - 1)) / 7)

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