Event: DCC

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Opponent Rating Result
Sidney A Jones 1550 1 - 0
William J Woodhouse 1588 ½ - ½
Christopher G Webb 1648 0 - 1
David Aldwinckle 1755 0 - 1
Geoff C Searing 1912 0 - 1
Sidney A Jones 1550 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1467 = (10003 + 400 * (1 - 4)) / 6)

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