Event: Roger Goldsmith Div 2

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Opponent Rating Result
Charles J Richmond 1583 ½ - ½
Charles J Richmond 1587 0 - 1
Nathan Weersing 1553 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1574 = (4723 + 400 * (1 - 1)) / 3)

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