Event: Division 2

Opponent Rating Result
Anthony Sadler 1813 ½ - ½
Jon M Griffiths 1792 0 - 1
Paul ER Badger 1863 ½ - ½
Dmytro S Chernov 1725 0 - 1
David R Thomas 1781 ½ - ½
Andy Ward 1903 ½ - ½
Nathan J Manley 1880 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1708 = (12757 + 400 * (0 - 2)) / 7)

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