Event: DCC

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Opponent Rating Result
Sidney A Jones 1550 ½ - ½
Mark A Potter 1822 0 - 1
John J Harbour 1774 0 - 1
David JW Hardie 1866 0 - 1
Christopher G Webb 1648 0 - 1
Charles Black 0 0 - 1
Simon Gill-Martin 1750 ½ - ½
Christopher G Webb 1648 1 - 0
Geoff C Searing 1912 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1374 = (13970 + 400 * (1 - 5)) / 9)

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