Event: Division One

Opponent Rating Result
Shahab U Quraishi 159 1 - 0
Stewart K Fishburne 184 0 - 1
Peter M Collins 158 ½ - ½
David R Thomas 161 1 - 0
Derek Laight 155 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

163 = (817 + 400 * (2 - 2)) / 5)

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