Event: Division A

Opponent Rating Result
Conor Reaney 173 ½ - ½
Jon I Lonsdale 152 ½ - ½
Dave C Martindale 161 0 - 1
Armand Catz 161 1 - 0
Graham J Ashcroft 161 ½ - ½
Jon I Lonsdale 152 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

93 = (960 + 400 * (1 - 2)) / 6)

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