Event: Div1

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Opponent Rating Result
Geoffrey D Brown 150 ½ - ½
Peter M Collins 160 ½ - ½
John S Shaw 133 1 - 0
Peter M Collins 158 ½ - ½
George Peters 145 1 - 0
Alex Webster 155 0 - 1
Vaughan WG Smith 125 1 - 0
Graham Harrison 168 1 - 0
Paul Williams 143 1 - 0
Alex Webster 148 ½ - ½
Andrew Toothill 166 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

296 = (1651 + 400 * (5 - 1)) / 11)

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