Event: Durham League Division 1

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Opponent Rating Result
Paul R Bielby 0 0 - 1
Mahmoud Shahbazi 0 0 - 1
Garry J Hewitt 0 ½ - ½
Zachary Cansdale 0 0 - 1
Philip Brooks 0 ½ - ½
Vaughan Davison 0 ½ - ½
Jonathan Sams 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-171 = (0 + 400 * (0 - 3)) / 7)

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Opponent Rating Result
Edwin Smith 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

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