Event: Division Two

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Opponent Rating Result
John Burke 159 1 - 0
Robert C Stern 169 0 - 1
Gideon Vecht 142 ½ - ½
Andrew Medworth 147 ½ - ½
Petr Vachtfeidl 164 ½ - ½
Robert C Stern 172 1 - 0
Anthony R Kent 158 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

216 = (1111 + 400 * (2 - 1)) / 7)

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