Event: 4-Board Division 1

Opponent Rating Result
Andrew D Bettley 1787 ½ - ½
Keith Porteous 1630 0 - 1
John Thackray 1921 0 - 1
Keith Porteous 1630 ½ - ½
F Hal Jorna 1614 ½ - ½
Stephen Greep 1624 ½ - ½
Andrew Donegan 1415 1 - 0
Robin A Edwards 1660 ½ - ½
Dominik Pitel 1352 1 - 0
Stephen Crow 1876 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1611 = (16509 + 400 * (2 - 3)) / 10)

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