Event: Bolton League Cup

Opponent Rating Result
George Harman 1887 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1887 = (1887 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Michael I Connor 1757 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2157 = (1757 + 400 * (1 - 0)) / 1)