Event: Division 2

Opponent Rating Result
Abbie Stevens 1616 1 - 0
David Riley 1629 ½ - ½
Anthony Sadler 1884 0 - 1
David Gardiner 1900 ½ - ½
Jonathan Dale 1909 0 - 1
David Gardiner 1885 ½ - ½
Julian H Summerfield 1864 1 - 0
Frank C Jimenez 1623 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1789 = (14310 + 400 * (2 - 2)) / 8)

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