Event: Division One

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Opponent Rating Result
David Friedgood 185 1 - 0
Carsten Pedersen 196 ½ - ½
Richard Black 188 ½ - ½
Robert S Eames 206 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

294 = (775 + 400 * (1 - 0)) / 4)

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