Event: Division 2

Opponent Rating Result
Richard J E McNally 1983 ½ - ½
Tom Darling 1971 0 - 1
Paul Roper 1893 0 - 1
Paul J Colburn 2019 1 - 0
Jonathan Dale 1876 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1948 = (9742 + 400 * (2 - 2)) / 5)

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