Event: Division 1

Opponent Rating Result
Jonathan Dale 1919 ½ - ½
Richard J E McNally 1989 ½ - ½
Gary C Jackson 1903 0 - 1
Mike J Donnelly 1975 0 - 1
Joshua Simpson 1886 ½ - ½
Andrew JD Baruch 2108 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1830 = (11780 + 400 * (0 - 2)) / 6)

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