Event: Norman Ellis (Open)

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Opponent Rating Result
David L Pedro 1783 1 - 0
Alex Howdle 1645 0(def) - 1
Paul RH Clarke 1751 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2167 = (3534 + 400 * (2 - 0)) / 2)

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