Event: Division 1

Opponent Rating Result
A Clive Walley 166 ½ - ½
Rob E Wilden 143 ½ - ½
Alun Richards 142 1 - 0
Phil Markham 142 0 - 1
Robert Ashworth 158 ½ - ½
Steve J Dyer 137 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

148 = (888 + 400 * (1 - 1)) / 6)

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