Event: IM Brown

Opponent Rating Result
Samuel J Playford 122 ½ - ½
Andy J Bagley 158 0 - 1
Peter Catt 137 0 - 1
Jonathan Moreton 115 1 - 0
Michael A Pollard 129 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-28 = (661 + 400 * (1 - 3)) / 5)

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