Event: Div 2

Opponent Rating Result
Jaime Castro 154 ½ - ½
Mike Allen 116 ½ - ½
Peter M Collins 158 ½ - ½
David J Pickering 142 ½ - ½
Paul Williams 140 ½ - ½
Andre Cockburn 115 0 - 1
Vaughan WG Smith 125 ½ - ½
David J Pickering 142 ½ - ½
Brian Lever 118 1 - 0
David Smith 151 ½ - ½
Gary Haime 152 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

138 = (1513 + 400 * (1 - 1)) / 11)

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