Event: Division 4

Opponent Rating Result
Neville Layhe 137 1 - 0
John Y Yee 135 ½ - ½
Derek H Northage 113 1 - 0
David Millington 119 ½ - ½
Andrew Mowat 117 0 - 1
Richard P Cantliff 126 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

258 = (747 + 400 * (3 - 1)) / 6)

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