Event: Division 1

Opponent Rating Result
Keith R Ingram 1844 0 - 1
Chris Ward 1800 0 - 1
Paul ER Badger 1863 0 - 1
Anthony Sadler 1813 ½ - ½
Alexander Roberts 1805 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1585 = (9125 + 400 * (0 - 3)) / 5)

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