Event: Open County Championship

Opponent Rating Result
Edward Matthewson 1927 1 - 0
Christopher Hampton 1905 ½ - ½
Konrad Scheffler 1922 1 - 0
Andrew Bowler 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1739 = (5754 + 400 * (3 - 0)) / 4)

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