Event: Preston Club Championship

Opponent Rating Result
David Tuke 135 1 - 0
D Brett Lund 207 1 - 0
Graham J Ashcroft 163 ½ - ½
Malcolm R Peacock 184 1 - 0
Peter E Jowett 187 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

335 = (876 + 400 * (3 - 1)) / 5)

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