Event: League Division 3

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Opponent Rating Result
Keith J Riach 1670 0 - 1
Phil Higgins 1288 1 - 0
Steve Collins 1318 0 - 1
Andrew Jacobs 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1069 = (4276 + 400 * (2 - 2)) / 4)

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