Event: Norman Ellis (Open)

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Opponent Rating Result
Randolph E Donahue 1789 0 - 1
Neil Griffiths 1657 1 - 0
James P Collier 1734 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1860 = (5180 + 400 * (2 - 1)) / 3)

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