Event: 4-Board Division 1

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Opponent Rating Result
F Hal Jorna 1614 1 - 0
Giles Dunn 1665 0 - 1
John Thackray 1921 0 - 1
Edward S Oxley 1755 0 - 1
Luke Julyan 1650 1 - 0
Robin A Edwards 1660 1 - 0
John Thackray 1921 0 - 1
Edward S Oxley 1755 ½ - ½
Keith Porteous 1630 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (15571 + 400 * (4 - 4)) / 9)

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