Event: Doncaster Handicap League

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Opponent Rating Result
Phillip J Battye 131 1 - 0
Peter Catt 141 0 - 1
Martin S Simmonds 149 ½ - ½
Andrew Butterworth 180 ½ - ½
Peter Catt 141 ½ - ½
Alan Bramall 141 0 - 1
Alan Bramall 141 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

89 = (1024 + 400 * (1 - 2)) / 7)

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