Event: Div 1 - Davy Trophy

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Opponent Rating Result
Andrew Butterworth 1921 ½ - ½
D Martin Howard 1965 0 - 1
Thomas Wills 2086 0 - 1
Carl Walker 1927 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1675 = (7899 + 400 * (0 - 3)) / 4)

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