Event: Durham City Club Championship

Opponent Rating Result
Fedir Dyshliuk 0 ½ - ½
Oliver Belcher 0 1 - 0
George Gazis 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (1 - 1)) / 3)

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