Event: Durham City Club Championship

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Opponent Rating Result
Steve H Jefferies 0 ½ - ½
George Gazis 0 0 - 1
Geoff Raw 0 1 - 0
Sebastian Palucha 0 1 - 0
Ken P Neat 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (2 - 2)) / 5)

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