Event: NSDCA Division 1

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Opponent Rating Result
Karol Grzybowski 1797 ½ - ½
Sandra G Blackburn 1611 ½ - ½
Anthony RW Brough 1753 ½ - ½
Simon Layhe 1914 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1769 = (7075 + 400 * (0 - 0)) / 4)

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