Event: Durham League Division 2

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Opponent Rating Result
James Stuart 0 ½ - ½
Robert Berry 0 1 - 0
Mark T Priest 0 1 - 0
Guy Smith 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

200 = (0 + 400 * (2 - 0)) / 4)

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Opponent Rating Result
Bryan J Bainbridge 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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