Event: Division 1 - Davy Trophy

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Opponent Rating Result
Paul Fletcher 166 0 - 1
John T Fletcher 184 0 - 1
Ionel Dragan 160 ½ - ½
Ken Hunter 144 0 - 1
Andrew Nettleship 92 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-11 = (746 + 400 * (1 - 3)) / 5)

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