Event: Division One

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Opponent Rating Result
Donald J Mason 193 1 - 0
Richard Mycroft 188 ½ - ½
Neil Clarke 160 0 - 1
Darren P Wheeler 208 ½ - ½
Pavel Besedin 202 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

110 = (951 + 400 * (1 - 2)) / 5)

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Opponent Rating Result
Kevin Hurney 177 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-223 = (177 + 400 * (0 - 1)) / 1)