Event: Division 2

Opponent Rating Result
David O Vaughan 156 ½ - ½
Robert Ashworth 161 0 - 1
Graham D Neville 148 0 - 1
Steve J Dyer 124 ½ - ½
Richard J West 141 1 - 0
Reza Gorji Pour 149 0 - 1
David O Vaughan 153 ½ - ½
Ian R White 166 ½ - ½
Michael J Taylor 203 ½ - ½
Colin R Chambers 139 ½ - ½
Peter Dhonau 168 0 - 1
Reza Gorji Pour 148 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

55 = (1856 + 400 * (1 - 4)) / 12)

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