Event: DCC

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Opponent Rating Result
Ted R Paul 110 1 - 0
Sidney A Jones 109 1 - 0
David Aldwinckle 131 0 - 1
Paul Brackner 121 1 - 0
Mark Dinmore 136 0 - 1
Julian C Cherryson 138 1 - 0
Geoff C Searing 154 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

186 = (899 + 400 * (4 - 3)) / 7)

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