Event: Roger Goldsmith Div 1

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Opponent Rating Result
James A Briginshaw 0 1 - 0
Ben Tarlow 1826 1 - 0
Alan Richardson 1938 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1388 = (3764 + 400 * (2 - 1)) / 3)

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