Event: Roger Goldsmith Div 2

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Opponent Rating Result
Stephen W Ruthen 1841 ½ - ½
Paul McMahon 1930 ½ - ½
Haroon Majeed 1948 0 - 1
Laurie Pott 1834 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1688 = (7553 + 400 * (0 - 2)) / 4)

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