Event: IM Brown

Opponent Rating Result
Peter Catt 140 ½ - ½
Marcin Skopinski 127 0 - 1
Dave V Toulson 115 0 - 1
David Firth 162 0 - 1
Norman G Andrews 132 0 - 1
Christopher Lund 120 ½ - ½
Chris G Willey 140 0 - 1
John M Morgan 167 0 - 1
Michael Johnson 132 1 - 0
Karim Khan 145 0 - 1
David G Mills 131 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-117 = (1511 + 400 * (1 - 8)) / 11)

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