Event: Division 2

Opponent Rating Result
Robert L Jones 1686 0 - 1
Matthew Lawes-Wickwar 1628 1 - 0
Andrew J Donnelly 1822 0 - 1
Samuel Gaffney 1885 ½ - ½
Matthew Lawes-Wickwar 1619 1 - 0
Judith Heffer 1683 0 - 1
Stephen Lewis 1900 1 - 0
Peter Coleman 1600 0 - 1
Timothy J Wesson 1807 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1692 = (15630 + 400 * (3 - 4)) / 9)

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