Event: Club Championship

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Opponent Rating Result
Geoffrey Pennington 1780 0 - 1
Graham J Ashcroft 1866 0 - 1
Alan Pidcock 1811 0 - 1
Paul A Evans 2052 0 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1419 = (5457 + 400 * (0 - 3)) / 3)

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