Event: B&DCL Div 1

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Opponent Rating Result
Sergiu Calauz 159 0 - 1
John P Weatherlake 175 1 - 0
Robert Halse 145 ½ - ½
Graham J Willetts 165 ½ - ½
John E Harris 128 1 - 0
David Michael Fuller 164 0 - 1
John E Harris 128 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

209 = (1064 + 400 * (3 - 2)) / 7)

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