Event: Division B

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Opponent Rating Result
Paul O'Mara 140 1 - 0
Geoffrey Pennington 143 ½ - ½
Philip N Raynor 142 0 - 1
Geoffrey Pennington 143 1 - 0
Alan Giles 153 ½ - ½
Nick Jameson 138 1 - 0
Philip N Raynor 142 ½ - ½
Sean Parker 129 1 - 0
David E Aspinall 139 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

319 = (1269 + 400 * (5 - 1)) / 9)

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