Event: Doncaster League

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Opponent Rating Result
Alan Bramall 1825 0 - 1
Neil R Lowther 1897 0 - 1
Martin S Simmonds 1777 1 - 0
Peter JE Ackley 2097 1 - 0
Neil R Lowther 1906 1 - 0
Andrew Butterworth 1911 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1902 = (11413 + 400 * (3 - 3)) / 6)

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