Event: Roger Goldsmith Div 1

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Opponent Rating Result
James A Briginshaw 1792 0 - 1
Zbynek Strela 1651 0 - 1
Charles J Richmond 1585 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1276 = (5028 + 400 * (0 - 3)) / 3)

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