Event: September Quickplay

Opponent Rating Result
Neil Sotheby 1172 1 - 0
Zhuoyi Lin 1055 ½ - ½
Ajay Selvan 1318 0 - 1
Alex Jamieson 1367 0 - 1
J Alan Stockley 1378 0 - 1
George Butterworth 1067 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1160 = (7357 + 400 * (2 - 3)) / 6)

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